System and method for controlling radio base station, and related device

ABSTRACT

In a system for controlling a radio base station, an out-of-band emergency channel based on a power cable is established between a BBU and an RRU such that even if a unique communications interface CPRI between the BBU and the RRU is abnormal, the BBU can still effectively control the RRU using the out-of-band emergency channel. In another system for controlling a radio base station, out-of-band emergency channels based on power cables are established among multiple RRUs such that even if a unique communications interface CPRI between a BBU and a target RRU is abnormal, the BBU can still effectively control the target RRU using an out-of-band emergency channel between any RRU (a unique communications interface CPRI of the RRU is normal) and the target RRU. In the present disclosure, the BBU can effectively control the RRU.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/804,103, filed on Nov. 6, 2017, which is a continuation of U.S.patent application Ser. No. 15/276,435, filed on Sep. 26, 2016, now U.S.Pat. No. 9,813,113, which is a continuation of International ApplicationNo. PCT/CN2014/089715, filed on Oct. 28, 2014, which claims priority toChinese Patent Application No. 201410115041.5, filed on Mar. 25, 2014.All of the aforementioned patent applications are hereby incorporated byreference in their entireties.

TECHNICAL FIELD

The present disclosure relates to the field of communicationstechnologies, and in particular, to a system and method for controllinga radio base station, and a related device.

BACKGROUND

With development of mobile communications technologies, large quantitiesof radio base stations are distributed in places requiring mobilecommunications coverage, such as cities and rural regions. A typicalradio base station mainly includes a baseband unit (BBU), a remote radiounit (RRU), a power supply system, a backup power supply system, and adirect current power distributor. A function of the power supply systemis to convert an input alternating current into a direct current, andsupply a direct current to the BBU (mainly including a BBU service unit)and the RRU (mainly including an RRU service unit) by using the directcurrent power distributor. A function of the backup power supply systemis to supply a direct current to the BBU and the RRU by using the directcurrent power distributor in a case of an alternating current poweroutage. In practice, the BBU, the power supply system, the backup powersupply system, and the direct current power distributor are generallyinstalled at the tower bottom for ease of manual maintenance, but theRRU is generally installed at the tower top close to an antenna toreduce a feeder loss. The BBU exchanges service data with the RRU byusing a common public radio interface (CPRI), and the BBU can performcontrol (such as automatic reset, fault query, diagnosis, and faultrecovery) on the RRU (mainly the RRU service unit) by using the CPRI.

In practice, it is found that the BBU controls the RRU depending on theunique communications interface CPRI. When the CPRI is abnormal, the BBUloses the capability of controlling the RRU.

SUMMARY

Embodiments of the present disclosure disclose a system and method forcontrolling a radio base station, and a related device such that a BBUcan effectively control an RRU.

A first aspect of the embodiments of the present disclosure discloses asystem for controlling a radio base station, including a power supplysystem, a backup power supply system, a direct current powerdistributor, a baseband unit BBU, and at least one remote radio unitRRU, where an input port of the direct current power distributor isconnected to direct current ports of the power supply system and thebackup power supply system, the BBU and the RRU are respectivelyconnected to direct current power supply ports of the direct currentpower distributor by using power cables, and the BBU is communicativelyconnected to the RRU by using a common public radio interface CPRI,where the control system further includes a central monitoring module,where the central monitoring module is communicatively connected to theBBU and is connected to a direct current power supply port of the directcurrent power distributor by using a power cable, where the centralmonitoring module is configured to receive RRU control information thatis transmitted by the BBU and includes a control instruction, modulatethe RRU control information onto the power cable, and transmit the RRUcontrol information to the direct current power distributor; the directcurrent power distributor is configured to transmit the RRU controlinformation to the RRU by using the power cable; and the RRU isconfigured to demodulate, from the power cable, the RRU controlinformation including the control instruction, and perform acorresponding control operation in response to the control instruction.

In a first possible implementation manner of the first aspect of theembodiments of the present disclosure, the RRU includes a first powerinput unit, a first power conversion unit, a first control unit, a firstpower cable communications unit, an RRU service unit, and a CPRI unit,where the first power conversion unit and the first power cablecommunications unit respectively establish a power cable connection tothe direct current power supply port of the direct current powerdistributor by using the first power input unit; the first powerconversion unit is configured to perform magnitude conversion on adirect current distributed by the direct current power distributor, andoutput a converted direct current to the first power cablecommunications unit, the first control unit, and the RRU service unit;the first control unit is communicatively connected to the first powercable communications unit and the RRU service unit; the RRU service unitis communicatively connected to the CPRI unit, and the CPRI unit isconfigured to communicatively connect to the BBU; the first power cablecommunications unit is configured to demodulate, from the power cable,the RRU control information that is transmitted by the direct currentpower distributor by using the first power input unit and includes thecontrol instruction, and transmit the RRU control information to thefirst control unit; the first control unit is configured to identify ato-be-performed operation type according to the control instructionincluded in the RRU control information, where the operation type is anyone of an operation type performed by the RRU service unit, a poweroperation type, and a status information collection operation type; andwhen the operation type is the operation type performed by the RRUservice unit, the first control unit transmits the control instructionto the RRU service unit in order to trigger the RRU service unit toperform a corresponding control operation.

With reference to the first possible implementation manner of the firstaspect of the embodiments of the present disclosure, in a secondpossible implementation manner of the first aspect of the embodiments ofthe present disclosure, the first power conversion unit iscommunicatively connected to the first control unit, and the firstcontrol unit is further configured to transmit the control instructionto the first power conversion unit when the operation type is the poweroperation type in order to trigger the first power conversion unit toperform a corresponding power control operation in response to thecontrol instruction, where the power control operation includes apower-on or power-off control operation.

With reference to the first or second possible implementation manner ofthe first aspect of the embodiments of the present disclosure, in athird possible implementation manner of the first aspect of theembodiments of the present disclosure, the RRU further includes a firstmonitoring and collecting unit, where the first monitoring andcollecting unit is communicatively connected to the first control unit;and the first control unit is further configured to transmit the controlinstruction to the first monitoring and collecting unit when theoperation type is the status information collection operation type inorder to trigger the first monitoring and collecting unit to collectstatus information of the RRU, where the status information of the RRUincludes status information of the RRU service unit of the RRU.

With reference to the first aspect of the embodiments of the presentdisclosure or any one of the first to third possible implementationmanners of the first aspect of the embodiments of the presentdisclosure, in a fourth possible implementation manner of the firstaspect of the embodiments of the present disclosure, the RRU controlinformation further includes an RRU address, where the RRU addressincluded in the RRU control information is the same as an address of theRRU to which the first power cable communications unit belongs.

With reference to the first aspect of the embodiments of the presentdisclosure or any one of the first to third possible implementationmanners of the first aspect of the embodiments of the presentdisclosure, in a fifth possible implementation manner of the firstaspect of the embodiments of the present disclosure, the centralmonitoring module is deployed independently of the BBU, and the centralmonitoring module includes an interface unit, a second power cablecommunications unit, a second power conversion unit, and a second powerinput unit, where the second power conversion unit and the second powercable communications unit respectively establish a power cableconnection to the direct current power supply port of the direct currentpower distributor by using the second power input unit; the second powerconversion unit is configured to perform magnitude conversion on adirect current distributed by the direct current power distributor, andoutput a converted direct current to the second power cablecommunications unit and the interface unit; the interface unit iscommunicatively connected to the BBU and the second power cablecommunications unit; the interface unit is configured to receive the RRUcontrol information transmitted by the BBU, and transmit the RRU controlinformation to the second power cable communications unit; and thesecond power cable communications unit is configured to receive the RRUcontrol information transmitted by the interface unit, modulate the RRUcontrol information onto the power cable, and transmit the RRU controlinformation to the direct current power distributor by using the secondpower input unit.

With reference to the fifth possible implementation manner of the firstaspect of the embodiments of the present disclosure, in a sixth possibleimplementation manner of the first aspect of the embodiments of thepresent disclosure, when the operation type is the operation typeperformed by the RRU service unit, the first control unit is furtherconfigured to receive an RRU service unit control result transmitted bythe RRU service unit, add the RRU service unit control result and anaddress of the BBU to response information, and transmit the responseinformation to the first power cable communications unit; or when theoperation type is the power operation type, the first control unit isfurther configured to receive an RRU power control result transmitted bythe first power conversion unit, add the RRU power control result and anaddress of the BBU to response information, and transmit the responseinformation to the first power cable communications unit; and the firstpower cable communications unit is further configured to receive theresponse information transmitted by the first control unit, modulate theresponse information onto the power cable, and transmit the responseinformation to the direct current power distributor by using the firstpower input unit; the direct current power distributor is furtherconfigured to transmit the response information to the second powercable communications unit by using the second power input unit; thesecond power cable communications unit is further configured todemodulate the response information from the power cable, and transmitthe response information to the interface unit; and the interface unitis further configured to transmit the response information to the BBU.

With reference to the fifth possible implementation manner of the firstaspect of the embodiments of the present disclosure, in a seventhpossible implementation manner of the first aspect of the embodiments ofthe present disclosure, when the operation type is the statusinformation collection operation type, the first control unit is furtherconfigured to receive the status information of the RRU that istransmitted by the first monitoring and collecting unit, add the statusinformation of the RRU and an address of the BBU to status feedbackinformation, and transmit the status feedback information to the firstpower cable communications unit; the first power cable communicationsunit is further configured to receive the status feedback informationtransmitted by the first control unit, modulate the status feedbackinformation onto the power cable, and transmit the status feedbackinformation to the direct current power distributor by using the firstpower input unit; the direct current power distributor is furtherconfigured to transmit the status feedback information to the secondpower cable communications unit by using the second power input unit;the second power cable communications unit is further configured todemodulate the status feedback information from the power cable, andtransmit the status feedback information to the interface unit; and theinterface unit is further configured to transmit the status feedbackinformation to the BBU.

With reference to the fifth possible implementation manner of the firstaspect of the embodiments of the present disclosure, in an eighthpossible implementation manner of the first aspect of the embodiments ofthe present disclosure, the control system further includes at least onecabinet, where each cabinet is connected to a direct current powersupply port of the direct current power distributor by using a powercable, where the BBU is further configured to transmit a cabinet controlinstruction including an address of a target cabinet to the receivingunit, where the target cabinet is any cabinet in the at least onecabinet; the interface unit is further configured to receive the cabinetcontrol instruction that is transmitted by the BBU and includes theaddress of the target cabinet, and transmit the cabinet controlinstruction to the second power cable communications unit; the secondpower cable communications unit is further configured to modulate thecabinet control instruction onto the power cable, and transmit thecabinet control instruction to the direct current power distributor byusing the second power input unit; and the direct current powerdistributor is further configured to transmit the cabinet controlinstruction to the target cabinet by using a power cable in order totrigger the target cabinet to demodulate the cabinet control instructionfrom the power cable and after determining through comparison that anaddress of the target cabinet is the same as the address of the targetcabinet included in the cabinet control instruction, perform acorresponding control operation in response to the cabinet controlinstruction.

With reference to the first aspect of the embodiments of the presentdisclosure or any one of the first to third possible implementationmanners of the first aspect of the embodiments of the presentdisclosure, in a ninth possible implementation manner of the firstaspect of the embodiments of the present disclosure, the centralmonitoring module is integrated in the BBU, and the central monitoringmodule includes a second control unit and a third power cablecommunications unit, where a third power conversion unit of the BBU andthe third power cable communications unit respectively establish a powercable connection to the direct current power supply port of the directcurrent power distributor by using a third power input unit of the BBU;the third power conversion unit is configured to perform magnitudeconversion on a direct current distributed by the direct current powerdistributor, and output a converted direct current to the third powercable communications unit, the second control unit, and a BBU serviceunit of the BBU; the second control unit is communicatively connected tothe BBU service unit of the BBU and the third power cable communicationsunit; the second control unit is configured to receive RRU controlinformation transmitted by the BBU service unit, and transmit the RRUcontrol information to the third power cable communications unit; andthe third power cable communications unit is configured to modulate theRRU control information onto the power cable, and transmit the RRUcontrol information to the direct current power distributor by using thethird power input unit.

With reference to the ninth possible implementation manner of the firstaspect of the embodiments of the present disclosure, in a tenth possibleimplementation manner of the first aspect of the embodiments of thepresent disclosure, when the operation type is the operation typeperformed by the RRU service unit, the first control unit is furtherconfigured to receive an RRU service unit control result transmitted bythe RRU service unit, add the RRU service unit control result and anaddress of the BBU to response information, and transmit the responseinformation to the first power cable communications unit; or when theoperation type is the power operation type, the first control unit isfurther configured to receive an RRU power control result transmitted bythe first power conversion unit, add the RRU power control result and anaddress of the BBU to response information, and transmit the responseinformation to the first power cable communications unit; and the firstpower cable communications unit is further configured to receive theresponse information transmitted by the first control unit, modulate theresponse information onto the power cable, and transmit the responseinformation to the direct current power distributor by using the firstpower input unit; the direct current power distributor is furtherconfigured to transmit the response information to the third power cablecommunications unit by using the third power input unit; the third powercable communications unit is further configured to demodulate theresponse information from the power cable, and transmit the responseinformation to the second control unit; and the second control unit isfurther configured to transmit the response information to the BBUservice unit.

With reference to the ninth possible implementation manner of the firstaspect of the embodiments of the present disclosure, in an eleventhpossible implementation manner of the first aspect of the embodiments ofthe present disclosure, when the operation type is the statusinformation collection operation type, the first control unit is furtherconfigured to receive the status information of the RRU that istransmitted by the first monitoring and collecting unit, add the statusinformation of the RRU and an address of the BBU to status feedbackinformation, and transmit the status feedback information to the firstpower cable communications unit; the first power cable communicationsunit is further configured to receive the status feedback informationtransmitted by the first control unit, modulate the status feedbackinformation onto the power cable, and transmit the status feedbackinformation to the direct current power distributor by using the firstpower input unit; the direct current power distributor is furtherconfigured to transmit the status feedback information to the thirdpower cable communications unit by using the third power input unit; thethird power cable communications unit is further configured todemodulate the status feedback information from the power cable, andtransmit the status feedback information to the second control unit; andthe second control unit is further configured to transmit the statusfeedback information to the BBU service unit.

With reference to the ninth possible implementation manner of the firstaspect of the embodiments of the present disclosure, in a twelfthpossible implementation manner of the first aspect of the embodiments ofthe present disclosure, the control system further includes at least onecabinet, where each cabinet is connected to a direct current powersupply port of the direct current power distributor by using a powercable, where the BBU service unit is further configured to transmit acabinet control instruction including an address of a target cabinet tothe second control unit, where the target cabinet is any cabinet in theat least one cabinet; the second control unit is further configured toreceive the cabinet control instruction that is transmitted by the BBUservice unit and includes the address of the target cabinet, andtransmit the cabinet control instruction to the third power cablecommunications unit; the third power cable communications unit isfurther configured to modulate the cabinet control instruction onto thepower cable, and transmit the cabinet control instruction to the directcurrent power distributor by using the third power input unit; thedirect current power distributor is further configured to transmit thecabinet control instruction to the target cabinet by using a powercable; and the target cabinet is configured to demodulate the cabinetcontrol instruction from the power cable, and after determining throughcomparison that an address of the target cabinet is the same as theaddress of the target cabinet included in the cabinet controlinstruction, perform a corresponding control operation in response tothe cabinet control instruction.

With reference to the first aspect of the embodiments of the presentdisclosure or any one of the first to third possible implementationmanners of the first aspect of the embodiments of the presentdisclosure, in a thirteenth possible implementation manner of the firstaspect of the embodiments of the present disclosure, the input port ofthe direct current power distributor is connected to each direct currentpower supply port of the direct current power distributor by using aninternal short-circuit protection unit in order to implement a powercable connection between the input port of the direct current powerdistributor and any direct current power supply port.

A second aspect of the embodiments of the present disclosure discloses asystem for controlling a radio base station, including a power supplysystem, a backup power supply system, a direct current powerdistributor, a baseband unit BBU, and at least two remote radio unitsRRUs, where an input port of the direct current power distributor isconnected to direct current ports of the power supply system and thebackup power supply system, the at least two RRUs are respectivelyconnected to direct current power supply ports of the direct currentpower distributor by using power cables, the BBU is communicativelyconnected to the at least two RRUs by using a common public radiointerface CPRI, and the at least two RRUs include a first RRU and atarget RRU, where the BBU is configured to transmit RRU controlinformation to the first RRU by using the CPRI, where the RRU controlinformation includes an address of a target RRU and a controlinstruction; the first RRU is configured to modulate the RRU controlinformation onto the power cable, and transmit the RRU controlinformation to the direct current power distributor; the direct currentpower distributor is configured to transmit the RRU control informationto the target RRU by using the power cable; and the target RRU isconfigured to demodulate, from the power cable, the RRU controlinformation transmitted by the direct current power distributor, andafter determining that an address of the target RRU is the same as theaddress of the target RRU included in the RRU control information,perform a corresponding control operation in response to the controlinstruction included in the RRU control information.

In a first possible implementation manner of the second aspect of theembodiments of the present disclosure, the target RRU includes a firstpower input unit, a first power conversion unit, a first control unit, afirst power cable communications unit, an RRU service unit, and a CPRIunit, where the first power conversion unit and the first power cablecommunications unit respectively establish a power cable connection tothe direct current power supply port of the direct current powerdistributor by using the first power input unit; the first powerconversion unit is configured to perform magnitude conversion on adirect current distributed by the direct current power distributor, andoutput a converted direct current to the first power cablecommunications unit, the first control unit, and the RRU service unit;the first control unit is communicatively connected to the first powercable communications unit and the RRU service unit; the RRU service unitis configured to communicatively connect to the BBU by using the CPRIunit; the first power input unit is configured to transmit, to the firstpower cable communications unit by using a power cable, the RRU controlinformation transmitted by the direct current power distributor; thefirst power cable communications unit is configured to demodulate, fromthe power cable, the RRU control information transmitted by the directcurrent power distributor, and after determining that the address of thetarget RRU is the same as the address of the target RRU included in theRRU control information, transmit the RRU control information to thefirst control unit; the first control unit is configured to identify ato-be-performed operation type according to the control instructionincluded in the RRU control information, where the operation type is anyone of an operation type performed by the RRU service unit, a poweroperation type, and a status information collection operation type; andwhen the operation type is the operation type performed by the RRUservice unit, the first control unit transmits the control instructionto the RRU service unit in order to trigger the RRU service unit toperform a corresponding control operation.

With reference to the first possible implementation manner of the secondaspect of the embodiments of the present disclosure, in a secondpossible implementation manner of the second aspect of the embodimentsof the present disclosure, the first power conversion unit iscommunicatively connected to the first control unit, and the firstcontrol unit is further configured to transmit the control instructionto the first power conversion unit when the operation type is the poweroperation type in order to trigger the first power conversion unit toperform a corresponding power control operation in response to thecontrol instruction, where the power control operation includes apower-on or power-off control operation.

With reference to the first or second possible implementation manner ofthe second aspect of the embodiments of the present disclosure, in athird possible implementation manner of the second aspect of theembodiments of the present disclosure, the target RRU further includes afirst monitoring and collecting unit, where the first monitoring andcollecting unit is communicatively connected to the first control unit;and the first control unit is further configured to transmit the controlinstruction to the first monitoring and collecting unit when theoperation type is the status information collection operation type inorder to trigger the first monitoring and collecting unit to collectstatus information of the RRU, where the status information of the RRUincludes status information of the RRU service unit of the RRU.

With reference to any one of the first to third possible implementationmanners of the second aspect of the embodiments of the presentdisclosure, in a fourth possible implementation manner of the secondaspect of the embodiments of the present disclosure, when the operationtype is the operation type performed by the RRU service unit, the firstcontrol unit is further configured to receive an RRU service unitcontrol result transmitted by the RRU service unit, add the RRU serviceunit control result and an address of the BBU to response information,and transmit the response information to the first power cablecommunications unit; or when the operation type is the power operationtype, the first control unit is further configured to receive a targetRRU power control result transmitted by the first power conversion unit,add the target RRU power control result and an address of the BBU toresponse information, and transmit the response information to the firstpower cable communications unit; and the first power cablecommunications unit is further configured to modulate the responseinformation onto the power cable, and transmit the response informationto the direct current power distributor by using the first power inputunit; the direct current power distributor is further configured totransmit the response information to the first RRU; and the first RRU isconfigured to transmit the response information to the BBU by using theCPRI.

With reference to any one of the first to third possible implementationmanners of the second aspect of the embodiments of the presentdisclosure, in a fifth possible implementation manner of the secondaspect of the embodiments of the present disclosure, when the operationtype is the status information collection operation type, the firstcontrol unit is further configured to receive the status information ofthe target RRU that is transmitted by the first monitoring andcollecting unit, add the status information of the target RRU and anaddress of the BBU to status feedback information, and transmit thestatus feedback information to the first power cable communicationsunit; the first power cable communications unit is further configured tomodulate the status feedback information onto the power cable, andtransmit the status feedback information to the direct current powerdistributor by using the first power input unit; the direct currentpower distributor is further configured to transmit the status feedbackinformation to the first RRU; and the first RRU is further configured totransmit the status feedback information to the BBU by using the CPRI.

With reference to any one of the first to third possible implementationmanners of the second aspect of the embodiments of the presentdisclosure, in a sixth possible implementation manner of the secondaspect of the embodiments of the present disclosure, the control systemfurther includes at least one cabinet, where each cabinet is connectedto a direct current power supply port of the direct current powerdistributor by using a power cable, where the BBU is further configuredto transmit a cabinet control instruction including an address of atarget cabinet to the first RRU, where the target cabinet is any cabinetin the at least one cabinet; the first RRU is further configured tomodulate the cabinet control instruction onto the power cable, andtransmit the cabinet control instruction to the direct current powerdistributor; the direct current power distributor is configured totransmit the cabinet control instruction to the target cabinet by usinga power cable; and the target cabinet is configured to demodulate thecabinet control instruction from the power cable, and after determiningthat an address of the target cabinet is the same as the address of thetarget cabinet included in the cabinet control instruction, perform acorresponding control operation in response to the cabinet controlinstruction.

With reference to the second aspect of the embodiments of the presentdisclosure or any one of the first to sixth possible implementationmanners of the second aspect of the embodiments of the presentdisclosure, in a seventh possible implementation manner of the secondaspect of the embodiments of the present disclosure, the input port ofthe direct current power distributor is connected to each direct currentpower supply port of the direct current power distributor by using aninternal short-circuit protection unit in order to implement a powercable connection between the input port of the direct current powerdistributor and any direct current power supply port.

A third aspect of the embodiments of the present disclosure discloses asystem for controlling a radio base station, including a power supplysystem, a backup power supply system, a direct current powerdistributor, a baseband unit BBU, and at least one cabinet, where aninput port of the direct current power distributor is connected todirect current ports of the power supply system and the backup powersupply system, and the BBU and the at least one cabinet are respectivelyconnected to direct current power supply ports of the direct currentpower distributor by using power cables, where the control systemfurther includes a central monitoring module, where the centralmonitoring module is communicatively connected to the BBU and isconnected to a direct current power supply port of the direct currentpower distributor by using a power cable, where the central monitoringmodule is configured to receive a cabinet control instruction that istransmitted by the BBU and includes an address of a target cabinet,modulate the cabinet control instruction onto the power cable, andtransmit the cabinet control instruction to the direct current powerdistributor, where the target cabinet is any cabinet in the at least onecabinet; the direct current power distributor is configured to transmitthe cabinet control instruction to a target cabinet by using the powercable; and the target cabinet is configured to demodulate the cabinetcontrol instruction from the power cable, and after determining that anaddress of the target cabinet is the same as the address of the targetcabinet included in the cabinet control instruction, perform acorresponding control operation in response to the cabinet controlinstruction.

In a first possible implementation manner of the third aspect of theembodiments of the present disclosure, the central monitoring module isdeployed independently of the BBU, and the central monitoring moduleincludes an interface unit, a second power cable communications unit, asecond power conversion unit, and a second power input unit, where thesecond power conversion unit and the second power cable communicationsunit respectively establish a power cable connection to the directcurrent power supply port of the direct current power distributor byusing the second power input unit; the second power conversion unit isconfigured to perform magnitude conversion on a direct currentdistributed by the direct current power distributor, and output aconverted direct current to the second power cable communications unitand the interface unit; the interface unit is communicatively connectedto the BBU and the second power cable communications unit; the interfaceunit is configured to receive the cabinet control instruction that istransmitted by the BBU and includes the address of the target cabinet,and transmit the cabinet control instruction to the second power cablecommunications unit; and the second power cable communications unit isconfigured to receive the cabinet control instruction transmitted by theinterface unit, modulate the cabinet control instruction onto the powercable, and transmit the cabinet control instruction to the directcurrent power distributor by using the second power input unit.

In a second possible implementation manner of the third aspect of theembodiments of the present disclosure, the central monitoring module isintegrated in the BBU, and the central monitoring module includes asecond control unit and a third power cable communications unit, where athird power conversion unit of the BBU and the third power cablecommunications unit respectively establish a power cable connection tothe direct current power supply port of the direct current powerdistributor by using a third power input unit of the BBU; the thirdpower conversion unit is configured to perform magnitude conversion on adirect current distributed by the direct current power distributor, andoutput a converted direct current to the third power cablecommunications unit, the second control unit, and a BBU service unit ofthe BBU; the second control unit is communicatively connected to the BBUservice unit of the BBU and the third power cable communications unit;the second control unit is configured to receive a cabinet controlinstruction that is transmitted by the BBU service unit and includes anaddress of a target cabinet, and transmit the cabinet controlinstruction to the third power cable communications unit; and the thirdpower cable communications unit is configured to modulate the cabinetcontrol instruction onto the power cable, and transmit the cabinetcontrol instruction to the direct current power distributor by using thethird power input unit.

With reference to the third aspect of the embodiments of the presentdisclosure or the first or second possible implementation manner of thethird aspect of the embodiments of the present disclosure, in a thirdpossible implementation manner of the third aspect of the embodiments ofthe present disclosure, the input port of the direct current powerdistributor is connected to each direct current power supply port of thedirect current power distributor by using an internal short-circuitprotection unit in order to implement a power cable connection betweenthe input port of the direct current power distributor and any directcurrent power supply port.

A fourth aspect of the embodiments of the present disclosure discloses aremote radio unit RRU, including a first power input unit, a first powerconversion unit, a first control unit, a first power cablecommunications unit, an RRU service unit, and a common public radiointerface CPRI unit, where the first power conversion unit and the firstpower cable communications unit are respectively configured to establisha power cable connection to a direct current power supply port of adirect current power distributor by using the first power input unit;the first power conversion unit is configured to perform magnitudeconversion on a direct current distributed by the direct current powerdistributor, and output a converted direct current to the first powercable communications unit, the first control unit, and the RRU serviceunit; the first control unit is communicatively connected to the firstpower cable communications unit and the RRU service unit; the RRUservice unit is communicatively connected to the CPRI unit, and the CPRIunit is configured to communicatively connect to a BBU; the first powercable communications unit is configured to demodulate, from the powercable, RRU control information that is transmitted by the direct currentpower distributor by using the first power input unit and includes acontrol instruction, and transmit the RRU control information to thefirst control unit; the first control unit is configured to identify ato-be-performed operation type according to the control instructionincluded in the RRU control information, where the operation type is anyone of an operation type performed by the RRU service unit, a poweroperation type, and a status information collection operation type; andwhen the operation type is the operation type performed by the RRUservice unit, the first control unit transmits the control instructionto the RRU service unit in order to trigger the RRU service unit toperform a corresponding control operation.

In a first possible implementation manner of the fourth aspect of theembodiments of the present disclosure, the first power conversion unitis communicatively connected to the first control unit, and the firstcontrol unit is further configured to transmit the control instructionto the first power conversion unit when the operation type is the poweroperation type in order to trigger the first power conversion unit toperform a corresponding power control operation in response to thecontrol instruction, where the power control operation includes apower-on or power-off control operation.

With reference to the fourth aspect of the embodiments of the presentdisclosure or the first possible implementation manner of the fourthaspect of the embodiments of the present disclosure, in a secondpossible implementation manner of the fourth aspect of the embodimentsof the present disclosure, the RRU further includes a first monitoringand collecting unit, where the first monitoring and collecting unit iscommunicatively connected to the first control unit; and the firstcontrol unit is further configured to transmit the control instructionto the first monitoring and collecting unit when the operation type isthe status information collection operation type in order to trigger thefirst monitoring and collecting unit to collect status information ofthe RRU, where the status information of the RRU includes statusinformation of the RRU service unit of the RRU.

With reference to the second possible implementation manner of thefourth aspect of the embodiments of the present disclosure, in a thirdpossible implementation manner of the fourth aspect of the embodimentsof the present disclosure, the RRU control information further includesan RRU address, where the RRU address included in the RRU controlinformation is the same as an address of the RRU to which the firstpower cable communications unit belongs.

With reference to the fourth aspect of the embodiments of the presentdisclosure or the first or second possible implementation manner of thefourth aspect of the embodiments of the present disclosure, in a fourthpossible implementation manner of the fourth aspect of the embodimentsof the present disclosure, when the operation type is the operation typeperformed by the RRU service unit, the first control unit is furtherconfigured to receive an RRU service unit control result transmitted bythe RRU service unit, add the RRU service unit control result and anaddress of the BBU to response information, and transmit the responseinformation to the first power cable communications unit; or when theoperation type is the power operation type, the first control unit isfurther configured to receive an RRU power control result transmitted bythe first power conversion unit, add the RRU power control result and anaddress of the BBU to response information, and transmit the responseinformation to the first power cable communications unit; and the firstpower cable communications unit is further configured to modulate theresponse information transmitted by the first control unit onto thepower cable, and transmit the response information to the direct currentpower distributor by using the first power input unit in order totrigger the direct current power distributor to transmit the responseinformation to a central monitoring module by using a power cable suchthat the central monitoring module demodulates the response informationfrom the power cable and transmits the response information to the BBU;or so as to trigger the direct current power distributor to transmit theresponse information to the BBU by using a power cable such that the BBUdemodulates the response information from the power cable and transmitsthe response information to a BBU service unit of the BBU.

With reference to the fourth aspect of the embodiments of the presentdisclosure or the first or second possible implementation manner of thefourth aspect of the embodiments of the present disclosure, in a fifthpossible implementation manner of the fourth aspect of the embodimentsof the present disclosure, when the operation type is the statusinformation collection operation type, the first control unit is furtherconfigured to receive the status information of the RRU that istransmitted by the first monitoring and collecting unit, add the statusinformation of the RRU and an address of the BBU to status feedbackinformation, and transmit the status feedback information to the firstpower cable communications unit; and the first power cablecommunications unit is further configured to modulate the statusfeedback information transmitted by the first control unit onto thepower cable, and transmit the status feedback information to the directcurrent power distributor by using the first power input unit in orderto trigger the direct current power distributor to transmit the statusfeedback information to a central monitoring module by using a powercable such that the central monitoring module demodulates the statusfeedback information from the power cable and transmits the statusfeedback information to the BBU; or so as to trigger the direct currentpower distributor to transmit the status feedback information to the BBUby using a power cable such that the BBU demodulates the status feedbackinformation from the power cable and transmits the status feedbackinformation to a BBU service unit of the BBU.

With reference to the fourth aspect of the embodiments of the presentdisclosure or the first or second possible implementation manner of thefourth aspect of the embodiments of the present disclosure, in a sixthpossible implementation manner of the fourth aspect of the embodimentsof the present disclosure, the RRU service unit is further configured toreceive, by using the CPRI unit, RRU control information that istransmitted by the BBU and includes an address of a target RRU and acontrol instruction, and transmit the RRU control information to thefirst control unit, where the address of the target RRU is not the sameas an address of the RRU; the first control unit is configured totransmit the RRU control information to the first power cablecommunications unit; and the first power cable communications unit isconfigured to modulate the RRU control information onto the power cable,and transmit the RRU control information to the direct current powerdistributor by using the first power input unit in order to trigger thedirect current power distributor to transmit the RRU control informationto the target RRU by using a power cable, to perform a correspondingcontrol operation.

With reference to the fourth aspect of the embodiments of the presentdisclosure or the first or second possible implementation manner of thefourth aspect of the embodiments of the present disclosure, in a seventhpossible implementation manner of the fourth aspect of the embodimentsof the present disclosure, the RRU service unit is further configured toreceive, by using the CPRI unit, a cabinet control instruction that istransmitted by the BBU and includes an address of a target cabinet, andtransmit the cabinet control instruction to the first control unit; thefirst control unit is configured to transmit the cabinet controlinstruction to the first power cable communications unit; and the firstpower cable communications unit is configured to modulate the cabinetcontrol instruction onto the power cable, and transmit the cabinetcontrol instruction to the direct current power distributor by using thefirst power input unit in order to trigger the direct current powerdistributor to transmit the cabinet control instruction to the targetcabinet by using a power cable in order to trigger the target cabinet toperform a corresponding control operation in response to the cabinetcontrol instruction.

A fifth aspect of the embodiments of the present disclosure discloses acentral monitoring module, including an interface unit, a second powercable communications unit, a second power conversion unit, and a secondpower input unit, where the second power cable communications unit andthe second power conversion unit are respectively configured toestablish a power cable connection to a direct current power supply portof a direct current power distributor by using the second power inputunit; the second power cable communications unit is communicativelyconnected to the interface unit, and the interface unit is configured tocommunicatively connect to a BBU; the second power conversion unit isconfigured to perform magnitude conversion on a direct currentdistributed h the direct current power distributor, and output aconverted direct current to the second power cable communications unitand the interface unit; the interface unit is configured to receive RRUcontrol information that is transmitted by the BBU and includes acontrol instruction, and transmit the RRU control information to thesecond power cable communications unit; and the second power cablecommunications unit is configured to modulate the RRU controlinformation onto a power cable, and transmit the RRU control informationto the direct current power distributor by using the second power inputunit in order to trigger the direct current power distributor totransmit the RRU control information to an RRU by using a power cablesuch that the RRU demodulates the RRU control information from the powercable and performs a corresponding control operation in response to thecontrol instruction.

In a first possible implementation manner of the fifth aspect of theembodiments of the present disclosure, the RRU control informationfurther includes an RRU address, where an address of the RRU thatperforms the corresponding control operation in response to the controlinstruction is the same as the RRU address included in the RRU controlinformation.

In a second possible implementation manner of the fifth aspect of theembodiments of the present disclosure, when the RRU identifies,according to the control instruction included in the RRU controlinformation, that a to-be-performed operation type is an operation typeperformed by an RRU service unit, the second power cable communicationsunit is further configured to demodulate, from the power cable, responseinformation that is transmitted by the direct current power distributorby using the second power input unit and includes an RRU service unitcontrol result and an address of the BBU; or when the RRU identifies,according to the control instruction included in the RRU controlinformation, that a to-be-performed operation type is a power operationtype, the second power cable communications unit is further configuredto demodulate, from the power cable, response information that istransmitted by the direct current power distributor by using the secondpower input unit and includes an RRU power control result and an addressof the BBU; and the second power cable communications unit is furtherconfigured to transmit the response information to the interface unit;and the interface unit is further configured to transmit the responseinformation to the BBU.

In a third possible implementation manner of the fifth aspect of theembodiments of the present disclosure, when the RRU identifies,according to the control instruction included in the RRU controlinformation, that a to-be-performed operation type is a statusinformation collection operation type, the second power cablecommunications unit is further configured to demodulate, from the powercable, status feedback information that is transmitted by the directcurrent power distributor by using the second power input unit andincludes status information of the RRU and an address of the BBU, andtransmit the status feedback information to the interface unit; and theinterface unit is further configured to transmit the status feedbackinformation to the BBU.

With reference to the fifth aspect of the embodiments of the presentdisclosure or any one of the first to third possible implementationmanners of the fifth aspect of the embodiments of the presentdisclosure, in a fourth possible implementation manner of the fifthaspect of the embodiments of the present disclosure, the interface unitis further configured to receive a cabinet control instruction that istransmitted by the BBU and includes an address of a target cabinet, andtransmit the cabinet control instruction to the second power cablecommunications unit; and the second power cable communications unit isfurther configured to modulate the cabinet control instruction onto thepower cable, and transmit the cabinet control instruction to the directcurrent power distributor by using the second power input unit such thatthe direct current power distributor transmits the cabinet controlinstruction to the target cabinet by using a power cable in order totrigger the target cabinet to demodulate the cabinet control instructionfrom the power cable and after determining that an address of the targetcabinet is the same as the address of the target cabinet included in thecabinet control instruction, perform a corresponding control operationin response to the cabinet control instruction.

A sixth aspect of the embodiments of the present disclosure discloses abaseband unit BBU, including a third power input unit, a third powerconversion unit, a BBU service unit, and a central monitoring module,where the central monitoring module includes a second control unit and athird power cable communications unit, where the third power cablecommunications unit and the third power conversion unit are respectivelyconfigured to establish a power cable connection to a direct currentpower supply port of a direct current power distributor by using thethird power input unit; the third power cable communications unit iscommunicatively connected to the second control unit, and the secondcontrol unit is communicatively connected to the BBU service unit; theBBU service unit is configured to communicatively connect to an RRU byusing a common public radio interface CPRI; the third power conversionunit is configured to perform magnitude conversion on a direct currentdistributed by the direct current power distributor, and output aconverted direct current to the third power cable communications unit,the second control unit, and the BBU service unit; the second controlunit is configured to receive RRU control information that istransmitted by the BBU service unit and includes a control instruction,and transmit the RRU control information to the third power cablecommunications unit; and the third power cable communications unit isconfigured to modulate the RRU control information onto a power cable,and transmit the RRU control information to the direct current powerdistributor by using the third power input unit in order to trigger thedirect current power distributor to transmit the RRU control informationto the RRU by using a power cable such that the RRU demodulates the RRUcontrol information from the power cable and performs a correspondingcontrol operation in response to the control instruction.

In a first possible implementation manner of the sixth aspect of theembodiments of the present disclosure, the RRU control informationfurther includes an RRU address, where an address of the RRU is the sameas the RRU address included in the RRU control information.

In a second possible implementation manner of the sixth aspect of theembodiments of the present disclosure, when the RRU identifies,according to the control instruction included in the RRU controlinformation, that a to-be-performed operation type is an operation typeperformed by an RRU service unit, the third power cable communicationsunit is further configured to demodulate, from the power cable, responseinformation that is transmitted by the direct current power distributorby using the third power input unit and includes an RRU service unitcontrol result and an address of the BBU; or when the RRU identifies,according to the control instruction included in the RRU controlinformation, that a to-be-performed operation type is a power operationtype, the third power cable communications unit is further configured todemodulate, from the power cable, response information that istransmitted by the direct current power distributor by using the thirdpower input unit and includes an RRU power control result and an addressof the BBU; and the third power cable communications unit is furtherconfigured to transmit the response information to the second controlunit; and the second control unit is further configured to transmit theresponse information to the BBU service unit.

In a third possible implementation manner of the sixth aspect of theembodiments of the present disclosure, when the RRU identifies,according to the control instruction included in the RRU controlinformation, that a to-be-performed operation type is a statusinformation collection operation type, the third power cablecommunications unit is further configured to demodulate, from the powercable, status feedback information that is transmitted by the directcurrent power distributor by using the third power input unit andincludes status information of the RRU and an address of the BBU, andtransmit the status feedback information to the second control unit; andthe second control unit is further configured to transmit the statusfeedback information to the BBU service unit.

With reference to the sixth aspect of the embodiments of the presentdisclosure or any one of the first to third possible implementationmanners of the sixth aspect of the embodiments of the presentdisclosure, in a fourth possible implementation manner of the sixthaspect of the embodiments of the present disclosure, the second controlunit is further configured to receive a cabinet control instruction thatis transmitted by the BBU service unit and includes an address of atarget cabinet, and transmit the cabinet control instruction to thethird power cable communications unit; and the third power cablecommunications unit is further configured to modulate the cabinetcontrol instruction onto the power cable, and transmit the cabinetcontrol instruction to the direct current power distributor by using thethird power input unit such that the direct current power distributortransmits the cabinet control instruction to the target cabinet by usinga power cable in order to trigger the target cabinet to demodulate thecabinet control instruction from the power cable and after determiningthat an address of the target cabinet is the same as the address of thetarget cabinet included in the cabinet control instruction, perform acorresponding control operation in response to the cabinet controlinstruction.

A seventh aspect of the embodiments of the present disclosure disclosesa method for controlling a radio base station, including: demodulating,by a first power cable communications unit of an RRU, from a powercable, RRU control information that is transmitted by a direct currentpower distributor by using a first power input unit of the RRU andincludes a control instruction; transmitting, by the first power cablecommunications unit of the RRU, the demodulated RRU control informationto a first control unit of the RRU; identifying, by the first controlunit of the RRU, a to-be-performed operation type according to thecontrol instruction included in the RRU control information, where theoperation type is any one of an operation type performed by an RRUservice unit, a power operation type, and a status informationcollection operation type; and when the operation type is the operationtype performed by the RRU service unit, transmitting, by the firstcontrol unit of the RRU, the control instruction to the RRU service unitof the RRU in order to trigger the RRU service unit to perform acorresponding control operation.

In a first possible implementation manner of the seventh aspect of theembodiments of the present disclosure, the method further includes: whenthe operation type is the power operation type, transmitting, by thefirst control f the RRU, the control instruction to a first powerconversion unit of the RRU in order to trigger the first powerconversion unit of the RRU to perform a corresponding power controloperation in response to the control instruction, where the powercontrol operation includes a power-on or power-off control operation.

With reference to the seventh aspect of the embodiments of the presentdisclosure or the first possible implementation manner of the seventhaspect of the embodiments of the present disclosure, in a secondpossible implementation manner of the seventh aspect of the embodimentsof the present disclosure, the method further includes: when theoperation type is the status information collection operation type,transmitting, by the first control unit of the RRU, the controlinstruction to a first monitoring and collecting unit of the RRU inorder to trigger the first monitoring and collecting unit of the RRU tocollect status information of the RRU, where the status information ofthe RRU includes status information of the RRU service unit of the RRU.

With reference to the second possible implementation manner of theseventh aspect of the embodiments of the present disclosure, in a thirdpossible implementation manner of the seventh aspect of the embodimentsof the present disclosure, the RRU control information further includesan RRU address, where the RRU address included in the RRU controlinformation is the same as an address of the RRU to which the firstpower cable communications unit belongs.

With reference to the third possible implementation manner of theseventh aspect of the embodiments of the present disclosure, in a fourthpossible implementation manner of the seventh aspect of the embodimentsof the present disclosure, the method further includes: when theoperation type is the operation type performed by the RRU service unit,receiving, by the first control unit of the RRU, an RRU service unitcontrol result transmitted by the RRU service unit, adding the RRUservice unit control result and an address of a BBU to responseinformation, and transmitting the response information to the firstpower cable communications unit of the RRU; or when the operation typeis the power operation type, receiving, by the first control unit of theRRU, an RRU power control result transmitted by the first powerconversion unit of the RRU, adding the RRU power control result and anaddress of a BBU to response information, and transmitting the responseinformation to the first power cable communications unit of the RRU; andmodulating, by the first power cable communications unit of the RRU, theresponse information onto the power cable, and transmitting the responseinformation to the direct current power distributor by using the firstpower input unit of the RRU in order to trigger the direct current powerdistributor to transmit the response information to a central monitoringmodule by using a power cable such that the central monitoring moduledemodulates the response information from the power cable and transmitsthe response information to the BBU; or so as to trigger the directcurrent power distributor to transmit the response information to theBBU by using a power cable such that the BBU demodulates the responseinformation from the power cable and transmits the response informationto a BBU service unit of the BBU.

With reference to the third possible implementation manner of theseventh aspect of the embodiments of the present disclosure, in a fifthpossible implementation manner of the seventh aspect of the embodimentsof the present disclosure, the method further includes: when theoperation type is the status information collection operation type,receiving, by the first control unit of the RRU, the status informationof the RRU that is transmitted by the first monitoring and collectingunit of the RRU, adding the status information of the RRU and an addressof a BBU to status feedback information, and transmitting the statusfeedback information to the first power cable communications unit of theRRU; and modulating, by the first power cable communications unit of theRRU, the status feedback information onto the power cable, andtransmitting the status feedback information to the direct current powerdistributor by using the first power input unit of the RRU in order totrigger the direct current power distributor to transmit the statusfeedback information to a central monitoring module by using a powercable such that the central monitoring module demodulates the statusfeedback information from the power cable and transmits the statusfeedback information to the BBU; or so as to trigger the direct currentpower distributor to transmit the status feedback information to the BBUby using a power cable such that the BBU demodulates the status feedbackinformation from the power cable and transmits the status feedbackinformation to a BBU service unit of the BBU.

With reference to the third possible implementation manner of theseventh aspect of the embodiments of the present disclosure, in a sixthpossible implementation manner of the seventh aspect of the embodimentsof the present disclosure, the method further includes: receiving, bythe RRU service unit of the RRU by using a CPRI unit of the RRU, RRUcontrol information that is transmitted by a BBU and includes an addressof a target RRU, and transmitting the RRU control information to thefirst control unit of the RRU, where the address of the target RRU isnot the same as the address of the RRU; transmitting, by the firstcontrol unit of the RRU, the RRU control information to the first powercable communications unit of the RRU; and modulating, by the first powercable communications unit of the RRU, the RRU control information ontothe power cable, and transmitting the RRU control information to thedirect current power distributor by using the first power input unit ofthe RRU in order to trigger the direct current power distributor totransmit the RRU control information to a target RRU by using a powercable, to perform a corresponding control operation.

With reference to the third possible implementation manner of theseventh aspect of the embodiments of the present disclosure, in aseventh possible implementation manner of the seventh aspect of theembodiments of the present disclosure, the method further includes:receiving, by the RRU service unit of the RRU by using a CPRI unit ofthe RRU, a cabinet control instruction that is transmitted by a BBU andincludes an address of a target cabinet, and transmitting the cabinetcontrol instruction to the first control unit of the RRU; transmitting,by the first control unit of the RRU, the cabinet control instruction tothe first power cable communications unit of the RRU; and modulating, bythe first power cable communications unit, the cabinet controlinstruction onto the power cable, and transmitting the cabinet controlinstruction to the direct current power distributor by using the firstpower input unit of the RRU in order to trigger the direct current powerdistributor to transmit the cabinet control instruction to the targetcabinet by using a power cable in order to trigger the target cabinet todemodulate the cabinet control instruction from the power cable andafter determining that an address of the target cabinet is the same asthe address of the target cabinet included in the cabinet controlinstruction, perform a corresponding control operation in response tothe cabinet control instruction.

An eighth aspect of the embodiments of the present disclosure disclosesa method for controlling a radio base station, including: receiving, bya central monitoring module, RRU control information that is transmittedby a BBU and includes a control instruction; and modulating, by thecentral monitoring module, the RRU control information onto a powercable, and transmitting the RRU control information to a direct currentpower distributor in order to trigger the direct current powerdistributor to transmit the RRU control information to an RRU by using apower cable such that the RRU demodulates the RRU control informationfrom the power cable and performs a corresponding control operation inresponse to the control instruction.

In a first possible implementation manner of the eighth aspect of theembodiments of the present disclosure, the method further includes: whenthe RRU identifies, according to the control instruction included in theRRU control information, that a to-be-performed operation type is anoperation type performed by an RRU service unit, demodulating, by thecentral monitoring module, from the power cable, response informationthat is transmitted by the direct current power distributor and includesan RRU service unit control result and an address of the BBU, andtransmitting the response information to the BBU; or when the RRUidentifies, according to the control instruction included in the RRUcontrol information, that a to-be-performed operation type is a poweroperation type, demodulating, by the central monitoring module, from thepower cable, response information that is transmitted by the directcurrent power distributor and includes an RRU power control result andan address of the BBU, and transmitting the response information to theBBU.

In a second possible implementation manner of the eighth aspect of theembodiments of the present disclosure, the method further includes: whenthe RRU identifies, according to the control instruction included in theRRU control information, that a to-be-performed operation type is astatus information collection operation type, demodulating, by thecentral monitoring module, from the power cable, status feedbackinformation that is transmitted by the direct current power distributorand includes status information of the RRU and an address of the BBU,and transmitting the status feedback information to the BBU.

With reference to the eighth aspect of the embodiments of the presentdisclosure or the first or second possible implementation manner of theeighth aspect of the embodiments of the present disclosure, in a thirdpossible implementation manner of the eighth aspect of the embodimentsof the present disclosure, the method further includes: receiving, bythe central monitoring module, a cabinet control instruction that istransmitted by the BBU and includes an address of a target cabinet,modulating the cabinet control instruction onto the power cable, andtransmitting the cabinet control instruction to the direct current powerdistributor such that the direct current power distributor transmits thecabinet control instruction to the target cabinet by using a power cablein order to trigger the target cabinet to demodulate the cabinet controlinstruction from the power cable and after determining that an addressof the target cabinet is the same as the address of the target cabinetincluded in the cabinet control instruction, perform a correspondingcontrol operation in response to the cabinet control instruction.

A ninth aspect of the embodiments of the present disclosure discloses amethod for controlling a radio base station, including: transmitting, bya BBU service unit of a BBU, RRU control information including a controlinstruction to a second control unit of the BBU; receiving, by thesecond control unit of the BBU, the RRU control information transmittedby the BBU service unit, and transmitting the RRU control information toa third power cable communications unit of the BBU; and modulating, bythe third power cable communications unit of the BBU, the RRU controlinformation onto a power cable, and transmitting the RRU controlinformation to a direct current power distributor by using a third powerinput unit of the BBU in order to trigger the direct current powerdistributor to transmit the RRU control information to an RRU by using apower cable such that the RRU demodulates the RRU control informationfrom the power cable and performs a corresponding control operation inresponse to the control instruction.

In a first possible implementation manner of the ninth aspect of theembodiments of the present disclosure, the method further includes: whenthe RRU identifies, according to the control instruction included in theRRU control information, that a to-be-performed operation type is anoperation type performed by an RRU service unit, demodulating, by thethird power cable communications unit, from the power cable, responseinformation that is transmitted by the direct current power distributorby using the third power input unit of the BBU and includes an RRUservice unit control result and an address of the BBU, and transmittingthe response information to the second control unit of the BBU; or whenthe RRU identifies, according to the control instruction included in theRRU control information, that a to-be-performed operation type is apower operation type, demodulating, by the third power cablecommunications unit of the BBU, from the power cable, responseinformation that is transmitted by the direct current power distributorby using the third power input unit of the BBU and includes an RRU powercontrol result and an address of the BBU, and transmitting the responseinformation to the second control unit of the BBU; and transmitting, bythe second control unit of the BBU, the response information to the BBUservice unit of the BBU.

In a second possible implementation manner of the ninth aspect of theembodiments of the present disclosure, the method further includes: whenthe RRU identifies, according to the control instruction included in theRRU control information, that a to-be-performed operation type is astatus information collection operation type, demodulating, by the thirdpower cable communications unit, from the power cable, status feedbackinformation that is transmitted by the direct current power distributorby using the third power input unit and includes status information ofthe RRU and an address of the BBU, and transmitting the status feedbackinformation to the second control unit of the BBU; and transmitting, bythe second control unit of the BBU, the status feedback information tothe BBU service unit of the BBU.

With reference to the ninth aspect of the embodiments of the presentdisclosure or the first or second possible implementation manner of theninth aspect of the embodiments of the present disclosure, in a thirdpossible implementation manner of the ninth aspect of the embodiments ofthe present disclosure, the method further includes: transmitting, bythe BBU service unit of the BBU, a cabinet control instruction includingan address of a target cabinet to the second control unit of the BBU;receiving, by the second control unit of the BBU, the cabinet controlinstruction transmitted by the BBU service unit of the BBU, andtransmitting the cabinet control instruction to the third power cablecommunications unit of the BBU; and modulating, by the third power cablecommunications unit of the BBU, the cabinet control instruction onto thepower cable, and transmitting the cabinet control instruction to thedirect current power distributor by using the third power input unit ofthe BBU such that the direct current power distributor transmits thecabinet control instruction to the target cabinet by using a power cablein order to trigger the target cabinet to demodulate the cabinet controlinstruction from the power cable and after determining that an addressof the target cabinet is the same as the address of the target cabinetincluded in the cabinet control instruction, perform a correspondingcontrol operation in response to the cabinet control instruction.

A tenth aspect of the embodiments of the present disclosure discloses amethod for controlling a radio base station, including: receiving, bythe central monitoring module, a cabinet control instruction that istransmitted by a BBU and includes an address of a target cabinet; andmodulating, by the central monitoring module, the cabinet controlinstruction onto a power cable, and transmitting the cabinet controlinstruction to a direct current power distributor such that the directcurrent power distributor transmits the cabinet control instruction tothe target cabinet by using a power cable in order to trigger the targetcabinet to demodulate the cabinet control instruction from the powercable and after determining that an address of the target cabinet is thesame as the address of the target cabinet included in the cabinetcontrol instruction, perform a corresponding control operation inresponse to the cabinet control instruction.

An eleventh aspect of the embodiments of the present disclosurediscloses a method for controlling a radio base station, including:transmitting, by a BBU service unit of a BBU, a cabinet controlinstruction including an address of a target cabinet to a second controlunit of the BBU; receiving, by the second control unit of the BBU, thecabinet control instruction transmitted by the BBU service unit of theBBU, and transmitting the cabinet control instruction to a third powercable communications unit of the BBU; and modulating, by the third powercable communications unit of the BBU, the cabinet control instructiononto a power cable, and transmitting the cabinet control instruction toa direct current power distributor by using a third power input unit ofthe BBU such that the direct current power distributor transmits thecabinet control instruction to the target cabinet by using a power cablein order to trigger the target cabinet to demodulate the cabinet controlinstruction from the power cable and after determining that an addressof the target cabinet is the same as the address of the target cabinetincluded in the cabinet control instruction, perform a correspondingcontrol operation in response to the cabinet control instruction.

In the embodiments of the present disclosure, an out-of-band emergencychannel based on a power cable can be established between a BBU and anRRU such that even if a unique communications interface CPRI between theBBU and the RRU is abnormal, the BBU can still effectively control theRRU by using the out-of-band emergency channel. In addition, for sometypes of sites in which multiple RRUs exist (for example, BBU Cloud),out-of-band emergency channels based on power cables can also beestablished among the multiple RRUs such that even if a uniquecommunications interface CPRI between a BBU and a certain target RRU isabnormal, the BBU can still effectively control the target RRU by usingan out-of-band emergency channel between any RRU (a uniquecommunications interface CPRI of the RRU is normal) and the target RRU.In the embodiments of the present disclosure, dispatching a person to asite for maintenance can be avoided, maintenance costs can be reduced,and a service interruption time of an RRU can also be shortened greatly.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in the embodiments of the presentdisclosure more clearly, the following briefly introduces theaccompanying drawings that describe the embodiments. The accompanyingdrawings in the following description show merely some embodiments ofthe present disclosure, and a person of ordinary skill in the art maystill derive other drawings from these accompanying drawings withoutcreative efforts.

FIG. 1 is a schematic diagram of an application scenario according to anembodiment of the present disclosure;

FIG. 2 is a schematic diagram of another application scenario accordingto an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a system for controlling aradio base station according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 5 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 6 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 7 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 8 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 9 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 10 is a schematic structural diagram of a direct current powerdistributor according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 12 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure;

FIG. 13 is a schematic structural diagram of an RRU according to anembodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a BBU according to anembodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of a central monitoring moduleaccording to an embodiment of the present disclosure;

FIG. 16 is a schematic flowchart of a method for controlling a radiobase station according to an embodiment of the present disclosure;

FIG. 17 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure;

FIG. 18 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure;

FIG. 19 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure;and

FIG. 20 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure.

DESCRIPTION OF EMBODIMENTS

The following clearly describes the technical solutions in theembodiments of the present disclosure with reference to the accompanyingdrawings in the embodiments of the present disclosure. The describedembodiments are merely a part rather than all of the embodiments of thepresent disclosure. All other embodiments obtained by a person ofordinary skill in the art based on the embodiments of the presentdisclosure without creative efforts shall fall within the protectionscope of the present disclosure.

Embodiments of the present disclosure disclose a system and method forcontrolling a radio base station, and a related device such that a BBUcan effectively control an RRU. For better understanding the embodimentsof the present disclosure, the following first describes an applicationscenario of the embodiments of the present disclosure.

FIG. 1 is a schematic diagram of an application scenario according to anembodiment of the present disclosure. In the application scenario shownin FIG. 1, a BBU, a power supply system, a backup power supply system,and a direct current power distributor are installed at the tower bottomas tower bottom devices for ease of manual maintenance; and an RRU isinstalled at the tower top close to an antenna to reduce a feeder loss.An input port of the direct current power distributor is connected todirect current ports of the power supply system and the backup powersupply system; the BBU and the RRU are respectively connected todifferent direct current power supply ports of the direct current powerdistributor by using power cables; the power supply system is generallyan AC/DC power supply system, and is configured to convert inputalternating currents into a direct current (such as −48 V) and outputthe direct current; the direct current power distributor is configuredto distribute the direct current that is output by the power supplysystem, to the BBU and the RRU to supply power (such as −48 V); thebackup power supply system is configured to store the direct currentthat is output by the power supply system, and output the direct currentto the direct current power distributor in a case of an alternatingcurrent power outage such that the direct current power distributordistributes the direct current that is output by the backup power supplysystem, to the BBU and the RRU to supply power; the BBU and the RRU areconnected by using a CPRI, the BBU exchanges service data with the RRUby using the CPRI and the BBU can perform control (such as automaticreset, fault query, diagnosis, and fault recovery) on the RRU (mainly anRRU service unit) by using the CPRI. In an actual application, in theapplication scenario shown in FIG. 1, the BBU controls the RRU dependingon the CPRI between the BBU and the RRU. However, when the CPRI betweenthe BBU and the RRU is abnormal, the BBU loses the capability ofcontrolling the RRU.

FIG. 2 is a schematic diagram of another application scenario accordingto an embodiment of the present disclosure. In the application scenarioshown in FIG. 2, a power supply system, a backup power supply system,and a direct current power distributor are installed at the tower bottomas tower bottom devices for ease of manual maintenance; multiple RRUsare installed at the tower top close to an antenna to reduce a feederloss; a BBU is installed in an equipment room far away from the RRUs(generally, installed in a central equipment room over 1 km away fromthe RRUs); power is supplied to the BBU without using the direct currentpower distributor, and the BBU may have a built-in direct current powersupply module, or power may be supplied by using another direct currentpower supply device. An input port of the direct current powerdistributor is connected to direct current ports of the power supplysystem and the backup power supply system; the multiple RRUs arerespectively connected to different direct current power supply ports ofthe direct current power distributor by using power cables; the powersupply system is generally an AC/DC power supply system, and isconfigured to convert input alternating currents into a direct current(such as −48 V) and output the direct current; the direct current powerdistributor is configured to distribute the direct current that isoutput by the power supply system, to the multiple RRUs to supply power(such as −48 V); the backup power supply system is configured to storethe direct current that is output by the power supply system, and outputthe direct current to the direct current power distributor in a case ofan alternating current power outage such that the direct current powerdistributor distributes the direct current that is output by the backuppower supply system, to the multiple RRUs to supply power; the BBU andeach RRU are connected by using a CPRI, the BBU exchanges service datawith each RRU by using the CPRI, and the BBU can perform control (suchas automatic reset, fault query, diagnosis, and fault recovery) on eachRRU (mainly an RRU service unit) by using the CPRI. In an actualapplication, in the application scenario shown in FIG. 2, the BBUcontrols a target RRU depending on a CPRI between the BBU and the targetRRU. However, when the CPRI between the BBU and the target RRU isabnormal, the BBU loses the capability of controlling the target RRU.

In view of the disadvantage that exists in the application scenarioshown in FIG. 1, an embodiment of the present disclosure discloses asystem for controlling a radio base station, where a schematicstructural diagram of the system for controlling a radio base station isshown in FIG. 3. The system for controlling a radio base station shownin FIG. 3 may include a power supply system 31, a backup power supplysystem 32, a direct current power distributor 33, a BBU 34, and an RRU35. The power supply system 31, the backup power supply system 32, thedirect current power distributor 33, and the BBU 34 may be installed atthe tower bottom as tower bottom devices for ease of manual maintenance;the RRU 35 may be installed at the tower top close to an antenna toreduce a feeder loss. The BBU 34 and the RRU 35 are connected by using aCPRI; an input port of the direct current power distributor 33 isconnected to direct current ports of the power supply system 31 and thebackup power supply system 32; the power supply system 31 is generallyan AC/DC power supply system, and the power supply system 31 isconfigured to convert input alternating currents into a direct current(such as −48 V) and output the direct current to the backup power supplysystem 32 and the direct current power distributor 33; the backup powersupply system 32 is generally a lead-acid battery; the direct currentport of the backup power supply system 32 is connected to the input portof the direct current power distributor 33, and is also connected to thedirect current port of the power supply system 31; the backup powersupply system 32 is configured to store the direct current that isoutput by the power supply system 31, and output the direct current tothe direct current power distributor 33 in a case of an alternatingcurrent power outage such that the direct current power distributor 33may distribute the direct current (such as −48 V) by using directcurrent power supply ports, to the BBU 34 and the RRU 35 to supplypower.

The system for controlling a radio base station shown in FIG. 3 mayfurther include a central monitoring module 36. The central monitoringmodule 36 may also be installed at the tower bottom as a tower bottomdevice for ease of manual maintenance; the central monitoring module 36may be deployed independently of the BBU 34. The central monitoringmodule 36 is communicatively connected to the BBU 34 and is connected toa direct current power supply port of the direct current powerdistributor 33 by using a power cable; the central monitoring module 36is configured to receive RRU control information that is transmitted bythe BBU 34 (mainly a BBU service unit) and includes a controlinstruction, modulate the RRU control information onto the power cable,and transmit the RRU control information to the direct current powerdistributor 33; the direct current power distributor 33 is configured totransmit the RRU control information to the RRU 35 by using a powercable; and the RRU 35 is configured to demodulate, from the power cable,the RRU control information including the control instruction, andperform a corresponding control operation in response to the controlinstruction.

In an embodiment, in the system for controlling a radio base stationshown in FIG. 3, the RRU 35 may include a first power input unit a, afirst power conversion unit b, a first control unit c, a first powercable communications unit d, an RRU service unit e, and a CPRI unit f,where the first power conversion unit b and the first power cablecommunications unit d respectively establish a power cable connection tothe direct current power supply port of the direct current powerdistributor 33 by using the first power input unit a. That is, by usingthe first power input unit a, not only a power cable connection may beimplemented between the first power conversion unit b and the directcurrent power supply port of the direct current power distributor 33,but also a power cable connection may be implemented between the firstpower cable communications unit d and the direct current power supplyport of the direct current power distributor 33. In an embodiment, thefirst power input unit a not only has a function of implementing a powercable connection between the first power conversion unit b and thedirect current power supply port of the direct current power distributor33 and a power cable connection between the first power cablecommunications unit d and the direct current power supply port of thedirect current power distributor 33 respectively, but also has functionssuch as lightning protection and overvoltage protection.

The first power conversion unit b is configured to perform magnitudeconversion on a direct current distributed by the direct current powerdistributor 33, and output a converted direct current to the first powercable communications unit d (such as 3.3 V). In an embodiment, the firstpower conversion unit b may further perform magnitude conversion on adirect current distributed by the direct current power distributor 33,and output a converted direct current to units such as the RRU serviceunit e and the first control unit c in the RRU 35 to supply power.

The first control unit c is communicatively connected to the first powercable communications unit d and the RRU service unit e; the RRU serviceunit e is communicatively connected to the CPRI unit f, and the CPRIunit f is configured to communicatively connect to the BBU 34. In anembodiment, the first control unit c may be communicatively connected toan interface of the first power cable communications unit d such as auniversal asynchronous receiver/transmitter (UART) interface or a serialperipheral interface (SPI) interface, and the first control unit c maybe communicatively connected to the RRU service unit e by using amonitoring interface 1.

The direct current power distributor 33 may receive, by using the directcurrent power supply port connected to the central monitoring module 36,the RRU control information that is modulated by the central monitoringmodule 36 onto the power cable for transmission, and the direct currentpower distributor 33 may transmit the RRU control information to the RRU35 by using the direct current power supply port connected to the firstpower input unit a of the RRU 35.

The first power cable communications unit d of the RRU 35 is configuredto demodulate, from the power cable, the RRU control informationincluding the control instruction, and transmit the demodulated RRUcontrol information to the first control unit c of the RRU 35; the firstcontrol unit c of the RRU 35 is configured to identify a to-be-performedoperation type according to the control instruction, where the operationtype is any one of an operation type performed by the RRU service unite, a power operation type, and a status information collection operationtype; and when the operation type is the operation type performed by theRRU service unit e, the first control unit c of the RRU 35 may transmitthe control instruction to the RRU service unit e of the RRU 35 in orderto trigger the RRU service unit e of the RRU 35 to perform acorresponding control operation. For example, the corresponding controloperation performed by the RRU service unit e may include automaticreset, fault query, diagnosis, fault recovery, or the like.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 3, the first power conversion unit b ofthe RRU 35 is communicatively connected to the first control unit c, andcorrespondingly, the first control unit c is further configured totransmit the control instruction to the first power conversion unit bwhen the operation type is the power operation type in order to triggerthe first power conversion unit b to perform a corresponding powercontrol operation in response to the control instruction, where thepower control operation includes a power-on or power-off controloperation. In this optional implementation manner, the BBU 34 may alsoimplement flexible power control on the RRU 35 without using the CPRIunit f of the RRU 35 such that incapability of implementing completepower-off on the RRU 35 by the BBU 34 by using the CPRI unit f can beovercome effectively. This is because the CPRI unit f cannot communicatenormally when the BBU 34 implements complete power-off on the RRU 35 byusing the CPRI unit f, and in this case, the BBU 34 cannot control theRRU 35 to power on again.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 3, the RRU 35 further includes a firstmonitoring and collecting unit g, where the first monitoring andcollecting unit g is communicatively connected to the first control unitc. The first monitoring and collecting unit g is configured to collectstatus information of the RRU 35 and transmit the status information tothe first control unit c, where the status information of the RRU 35includes status information of the RRU service unit e, such as voltagestatus information, temperature status information, and output powerstatus information of the RRU service unit e.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 3, the first control unit c of the RRU35 is further configured to transmit the control instruction to thefirst monitoring and collecting unit g of the RRU 35 when the operationtype is the status information collection operation type in order totrigger the first monitoring and collecting unit g to collect the statusinformation of the RRU 35 and transmit the status information to thefirst control unit c.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 3, the RRU control information mayfurther include an RRU address, where the RRU address included in theRRU control information is the same as an address of the RRU 35 to whichthe first power cable communications unit d belongs. In an embodiment,after demodulating, from the power cable, the RRU control informationincluding the control instruction and the RRU address, the first powercable communications unit d of the RRU 35 may determine whether the RRUaddress included in the RRU control information is the same as theaddress of the RRU 35 to which the first power cable communications unitd belongs; if they are the same, the first power cable communicationsunit d of the RRU 35 may transmit the demodulated RRU controlinformation to the first control unit c of the RRU 35; on the contrary,if they are not the same, the first power cable communications unit d ofthe RRU 35 may ignore the RRU control information.

FIG. 4 is a schematic structural diagram of another system forcontrolling a radio base station that is obtained by optimizing thesystem for controlling a radio base station shown in FIG. 3 according toan embodiment of the present disclosure. In the system for controlling aradio base station shown in FIG. 4, a central monitoring module 36 isstill deployed independently of a BBU 34, and includes an interface unitA, a second power cable communications unit B, a second power conversionunit C, and a second power input unit D, where the second powerconversion unit C and the second power cable communications unit Brespectively establish a power cable connection to a direct currentpower supply port of a direct current power distributor 33 by using thesecond power input unit D. That is, by using the second power input unitD, not only a power cable connection may be implemented between thesecond power conversion unit C and the direct current power supply portof the direct current power distributor 33, but also a power cableconnection may be implemented between the second power cablecommunications unit B and the direct current power supply port of thedirect current power distributor 33. In an embodiment, the second powerinput unit D not only has a function of implementing a power cableconnection between the second power conversion unit C and the directcurrent power supply port of the direct current power distributor 33 anda power cable connection between the second power cable communicationsunit B and the direct current power supply port of the direct currentpower distributor 33 respectively, but also has functions such aslightning protection and overvoltage protection.

The second power conversion unit C is configured to perform magnitudeconversion on a direct current distributed by the direct current powerdistributor 33, and output a converted direct current (such as 3.3 V) tothe second power cable communications unit B. Still further, the secondpower conversion unit C may further perform magnitude conversion on adirect current distributed by the direct current power distributor 33,and output a converted direct current to the interface unit A.

The interface unit A is communicatively connected to the BBU 34 and thesecond power cable communications unit B. In an embodiment, theinterface unit A may be communicatively connected to the BBU 34 by usinga monitoring interface 2, and the interface unit A may becommunicatively connected to an interface of the second power cablecommunications unit B such as a UART interface or an SPI. The interfaceunit A may convert the interface of the second power cablecommunications unit B such as the UART interface or the SPI into amonitoring interface 2 that may perform communication with the BBU 34,for example, RS485. The interface unit A is configured to receive RRUcontrol information that is transmitted by the BBU 34 and includes acontrol instruction, and transmit the RRU control information to thesecond power cable communications unit B; and the second power cablecommunications unit B is configured to modulate the RRU controlinformation onto a power cable, and transmit the RRU control informationto the direct current power distributor 33 by using the second powerinput unit D. The direct current power distributor 33 may receive, byusing the direct current power supply port connected to the second powerinput unit D, the RRU control information that is modulated by thesecond power cable communications unit B onto the power cable fortransmission, and the direct current power distributor 33 may transmitthe RRU control information to an RRU 35 by using a direct current powersupply port connected to a first power input unit a of the RRU 35.

A first power cable communications unit d of the RRU 35 is configured todemodulate, from the power cable, the RRU control information includingthe control instruction, and transmit the demodulated RRU controlinformation to a first control unit c of the RRU 35. The first controlunit c of the RRU 35 is configured to identify a to-be-performedoperation type according to the control instruction included in the RRUcontrol information. When the operation type is an operation typeperformed by an RRU service unit e, the first control unit c of the RRU35 transmits the control instruction to the RRU service unit e of theRRU 35 in order to trigger the RRU service unit e of the RRU 35 toperform a corresponding control operation. For example, thecorresponding control operation performed by the RRU service unit e mayinclude automatic reset, fault query, diagnosis, fault recovery, or thelike.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 4, after the first control unit c ofthe RRU 35 identifies, according to the control instruction, that theto-be-performed operation type is the operation type performed by theRRU service unit e, and transmits the control instruction to the RRUservice unit e of the RRU 35 in order to trigger the RRU service unit eof the RRU 35 to perform the corresponding control operation, the firstcontrol unit c of the RRU 35 is further configured to receive an RRUservice unit control result transmitted by the RRU service unit e, addthe RRU service unit control result and an address of the BBU 34 toresponse information, and transmit the response information to the firstpower cable communications unit d; or after the first control unit c ofthe RRU 35 identifies, according to the control instruction, that theto-be-performed operation type is a power operation type, and transmitsthe control instruction to a first power conversion unit b of the RRU 35in order to trigger the first power conversion unit b to perform acorresponding power control operation in response to the controlinstruction, the first control unit c of the RRU 35 is furtherconfigured to receive an RRU power control result transmitted h thefirst power conversion unit b, add the RRU power control result and anaddress of the BBU 34 to response information, and transmit the responseinformation to the first power cable communications unit d; andcorrespondingly, the first power cable communications unit d is furtherconfigured to modulate the response information transmitted by the firstcontrol unit c of the RRU 35 onto the power cable, and transmit theresponse information to the direct current power distributor 33 by usingthe first power input unit a; the direct current power distributor 33 isfurther configured to transmit the response information to the secondpower cable communications unit B by using the second power input unitD; the second power cable communications unit B is further configured todemodulate the response information from the power cable, and transmitthe response information to the interface unit A; and the interface unitA is further configured to transmit the response information to the BBU34.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 4, after the first control unit c ofthe RRU 35 identifies, according to the control instruction, that theto-be-performed operation type is a status information collectionoperation type, and transmits the control instruction to a firstmonitoring and collecting unit g of the RRU 35 in order to trigger thefirst monitoring and collecting unit g to collect status information ofthe RRU 35, the first control unit c is further configured to receivethe status information of the RRU 35 that is transmitted by the firstmonitoring and collecting unit g, add the status information of the RRU35 and an address of the BBU 34 to status feedback information, andtransmit the status feedback information to the first power cablecommunications unit d; and correspondingly, the first power cablecommunications unit d is further configured to modulate the statusfeedback information transmitted by the first control unit c onto thepower cable, and transmit the status feedback information to the directcurrent power distributor 33 by using the first power input unit a; thedirect current power distributor 33 is further configured to transmitthe status feedback information to the second power cable communicationsunit B by using the second power input unit D; the second power cablecommunications unit B is further configured to demodulate the statusfeedback information from the power cable, and transmit the statusfeedback information to the interface unit A; and the interface unit Ais further configured to transmit the status feedback information to theBBU 34.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 4, the RRU control information mayfurther include an RRU address, where the RRU address included in theRRU control information is the same as an address of the RRU 35 to whichthe first power cable communications unit d belongs. In an embodiment,after demodulating, from the power cable, the RRU control informationincluding the control instruction and the RRU address, the first powercable communications unit d of the RRU 35 may determine whether the RRUaddress included in the RRU control information is the same as theaddress of the RRU 35 to which the first power cable communications unitd belongs; if they are the same, the first power cable communicationsunit d of the RRU 35 may transmit the demodulated. RRU controlinformation to the first control unit c of the RRU 35; on the contrary,if they are not the same, the first power cable communications unit d ofthe RRU 35 may ignore the RRU control information.

FIG. 5 is a schematic structural diagram of another system forcontrolling a radio base station that is obtained by optimizing thesystem for controlling a radio base station shown in FIG. 4 according toan embodiment of the present disclosure. Compared with the system forcontrolling a radio base station shown in FIG. 4, the system forcontrolling a radio base station shown in FIG. 5 may further include atleast one cabinet, where each cabinet (mainly including a monitoringunit) is connected to a direct current power supply port of a directcurrent power distributor 33 by using a power cable; in actualdeployment, some cabinets (such as a cabinet 1) may be deployed as towerbottom devices together with a BBU 34, a power supply system 31, abackup power supply system 32, the direct current power distributor 33,and the like, but some cabinets (such as a cabinet 2 to a cabinet n) maybe deployed in an equipment room far away from an RRU 35.

An interface unit A is further configured to receive a cabinet controlinstruction that is transmitted by the BBU 34 and includes an address ofa target cabinet, and transmit the cabinet control instruction to asecond power cable communications unit B; the second power cablecommunications unit B is further configured to modulate the cabinetcontrol instruction onto a power cable, and transmit the cabinet controlinstruction to the direct current power distributor 33 by using a secondpower input unit D; the direct current power distributor 33 is furtherconfigured to transmit the cabinet control instruction to the targetcabinet by using a power cable; and the target cabinet is configured todemodulate the cabinet control instruction from the power cable andafter determining that an address of the target cabinet is the same asthe address of the target cabinet included in the cabinet controlinstruction, perform a corresponding control operation in response tothe cabinet control instruction. On the contrary, if the target cabinetdetermines that the address of the target cabinet is not the same as theaddress of the target cabinet included in the cabinet controlinstruction, the target cabinet may ignore the cabinet controlinstruction.

For example, the interface unit A may receive the cabinet controlinstruction that is transmitted by the BBU 34 and includes an address ofthe cabinet 2 (that is, the cabinet 2 is the target cabinet), andtransmit the cabinet control instruction to the second power cablecommunications unit B; the second power cable communications unit Bmodulates the cabinet control instruction onto the power cable, andtransmits the cabinet control instruction to the direct current powerdistributor 33 by using the second power input unit D; the directcurrent power distributor 33 transmits the cabinet control instructionto the cabinet 2 (mainly a monitoring unit) by using a power cable; andthe cabinet 2 (mainly the monitoring unit) is configured to demodulatethe cabinet control instruction from the power cable and afterdetermining that an address of the cabinet 2 is the same as the addressof the cabinet 2 included in the cabinet control instruction, perform acorresponding control operation in response to the cabinet controlinstruction.

In an embodiment, after the cabinet 2 (mainly the monitoring unit)performs the corresponding control operation in response to the cabinetcontrol instruction, the cabinet 2 (mainly the monitoring unit) may adda cabinet control result and an address of the BBU 34 to a cabinetcontrol response message, modulate the cabinet control response messageonto the power cable, and transmit the cabinet control response messageto the direct current power distributor 33; the direct current powerdistributor 33 may transmit the cabinet control response message to thesecond power cable communications unit B by using the second power inputunit D; and the second power cable communications unit B may demodulatethe cabinet control response message from the power cable and transmitthe cabinet control response message to the BBU 34 by using theinterface unit A. The corresponding control operation performed by thetarget cabinet in response to the cabinet control instruction mayinclude control operations on an internal environment, a power supply, aheat dissipation system and the like of the target cabinet.

In the system for controlling a radio base station shown in FIG. 5, ifthe BBU does not need to be connected to monitoring units of the cabinet1 to the cabinet n by using monitoring cables, the BBU can control thecabinets by using corresponding power cables. Therefore, monitoringcables between the BBU and the cabinets are saved, and projectinstallation costs and difficulty of a radio base station can bereduced.

FIG. 6 is a schematic structural diagram of another system forcontrolling a radio base station that is obtained by optimizing thesystem for controlling a radio base station shown in FIG. 3 according toan embodiment of the present disclosure. In the system for controlling aradio base station shown in FIG. 6, a central monitoring module 36 maybe integrated in a BBU 34. In this case, the central monitoring module36 may include a second control unit E and a third power cablecommunications unit F. The BBU 34 may include a BBU service unit G, athird power conversion unit and a third power input unit I, and the BBUservice unit G is communicatively connected to the second control unitE. For example, the BBU service unit G is communicatively connected tothe second control unit E by using a monitoring interface 2. The secondcontrol unit E is communicatively connected to the third power cablecommunications unit F. The third power conversion unit H and the thirdpower cable communications unit F respectively establish a power cableconnection to a direct current power supply port of a direct currentpower distributor 33 by using the third power input unit I. The thirdpower conversion unit H is configured to perform magnitude conversion ona direct current distributed by the direct current power distributor 33,and output a converted direct current to the third power cablecommunications unit F (such as 3.3 V). Still further, the third powerconversion unit H may be further configured to perform magnitudeconversion on a direct current distributed by the direct current powerdistributor 33, and output a converted direct current to units such asthe BBU service unit G and the second control unit E in the BBU 34. Inan embodiment, the second control unit E and the third power cablecommunications unit F may also have built-in direct current power supplymodules for supplying power separately.

The second control unit E is configured to receive RRU controlinformation that is transmitted by the BBU service unit G and includes acontrol instruction, and transmit the RRU control information to thethird power cable communications unit F; and the third power cablecommunications unit F is configured to modulate the RRU controlinformation onto a power cable, and transmit the RRU control informationto the direct current power distributor 33 by using the third powerinput unit I. The direct current power distributor 33 may receive, byusing the direct current power supply port connected to the third powerinput unit I, the RRU control information that is modulated by the thirdpower cable communications unit F onto the power cable for transmission,and the direct current power distributor 33 may transmit the RRU controlinformation to an RRU 35 by using a direct current power supply portconnected to a first power input unit a of the RRU 35. Correspondingly,a first power cable communications unit d of the RRU 35 is configured todemodulate, from the power cable, the RRU control information includingthe control instruction, and transmit the demodulated RRU controlinformation to a first control unit c of the RRU 35. The first controlunit c of the RRU 35 is configured to identify a to-be-performedoperation type according to the control instruction included in the RRUcontrol information. When the operation type is an operation typeperformed by an RRU service unit e, the first control unit c of the RRU35 transmits the control instruction to the RRU service unit e of theRRU 35 in order to trigger the RRU service unit e of the RRU 35 toperform a corresponding control operation. For example, thecorresponding control operation performed by the RRU service unit e mayinclude automatic reset, fault query, diagnosis, fault recovery, or thelike.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 6, after the first control unit c ofthe RRU 35 identifies, according to the control instruction, that theto-be-performed operation type is the operation type performed by theRRU service unit e, and transmits the control instruction to the RRUservice unit e of the RRU 35 in order to trigger the RRU service unit eof the RRU 35 to perform the corresponding control operation, the firstcontrol unit c of the RRU 35 is further configured to receive an RRUservice unit control result transmitted by the RRU service unit e, addthe RRU service unit control result and an address of the BBU 34 toresponse information, and transmit the response information to the firstpower cable communications unit d; or after the first control unit c ofthe RRU 35 identifies, according to the control instruction, that theto-be-performed operation type is a power operation type, and transmitsthe control instruction to a first power conversion unit b of the RRU 35in order to trigger the first power conversion unit b to perform acorresponding power control operation in response to the controlinstruction, the first control unit c of the RRU 35 is furtherconfigured to receive an RRU power control result transmitted by thefirst power conversion unit b, add the RRU power control result and anaddress of the BBU 34 to response information, and transmit the responseinformation to the first power cable communications unit d; andcorrespondingly, the first power cable communications unit d is furtherconfigured to modulate the response information transmitted by the firstcontrol unit c of the RRU 35 onto the power cable, and transmit theresponse information to the direct current power distributor 33 by usingthe first power input unit a; the direct current power distributor 33 isfurther configured to transmit the response information to the thirdpower cable communications unit F by using the third power input unit I;the third power cable communications unit F is further configured todemodulate the response information from the power cable, and transmitthe response information to the second control unit E; and the secondcontrol unit E is further configured to transmit the responseinformation to the BBU service unit G.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 6, after the first control unit c ofthe RRU 35 identifies, according to the control instruction, that theto-be-performed operation type is a status information collectionoperation type, and transmits the control instruction to a firstmonitoring and collecting unit g of the RRU 35 in order to trigger thefirst monitoring and collecting unit g to collect status information ofthe RRU 35, the first control unit c is further configured to receivethe status information of the RRU 35 that is transmitted by the firstmonitoring and collecting unit g, add the status information of the RRU35 and an address of the BBU 34 to status feedback information, andtransmit the status feedback information to the first power cablecommunications unit d; and correspondingly, the first power cablecommunications unit d is further configured to modulate the statusfeedback information transmitted by the first control unit c onto thepower cable, and transmit the status feedback information to the directcurrent power distributor 33 by using the first power input unit a; thedirect current power distributor 33 is further configured to transmitthe status feedback information to the third power cable communicationsunit F by using the third power input unit I; the third power cablecommunications unit F is further configured to demodulate the statusfeedback information from the power cable, and transmit the statusfeedback information to the second control unit E; and the secondcontrol unit E is further configured to transmit the status feedbackinformation to the BBU service unit G.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 6, the RRU control information mayfurther include an RRU address, where the RRU address included in theRRU control information is the same as an address of the RRU 35 to whichthe first power cable communications unit d belongs. In an embodiment,after demodulating, from the power cable, the RRU control informationincluding the control instruction and the RRU address, the first powercable communications unit d of the RRU 35 may determine whether the RRUaddress included in the RRU control information is the same as theaddress of the RRU 35 to which the first power cable communications unitd belongs; if they are the same, the first power cable communicationsunit d of the RRU 35 may transmit the demodulated RRU controlinformation to the first control unit c of the RRU 35; on the contrary,if they are not the same, the first power cable communications unit d ofthe RRU 35 may ignore the RRU control information.

FIG. 7 is a schematic structural diagram of another system forcontrolling a radio base station that is obtained by optimizing thesystem for controlling a radio base station shown in FIG. 6 according toan embodiment of the present disclosure. Compared with the system forcontrolling a radio base station shown in FIG. 6, the system forcontrolling a radio base station shown in FIG. 7 may further include atleast one cabinet, where each cabinet (mainly including a monitoringunit) is connected to a direct current power supply port of a directcurrent power distributor 33 by using a power cable; in actualdeployment, some cabinets (such as a cabinet 1) may be deployed as towerbottom devices together with a BBU 34, a power supply system 31, abackup power supply system 32, and the like, but some cabinets (such asa cabinet 2 to a cabinet n) may be deployed in an equipment room faraway from an RRU 35.

A second control unit E is further configured to receive a cabinetcontrol instruction that is transmitted by a BBU service unit G andincludes an address of a target cabinet, and transmit the cabinetcontrol instruction to a third power cable communications unit F; thethird power cable communications unit F is further configured tomodulate the cabinet control instruction onto a power cable, andtransmit the cabinet control instruction to the direct current powerdistributor 33 by using a third power input unit I; the direct currentpower distributor 33 is further configured to transmit the cabinetcontrol instruction to the target cabinet by using a power cable; andthe target cabinet is configured to demodulate the cabinet controlinstruction from the power cable, and after determining that an addressof the target cabinet is the same as the address of the target cabinetincluded in the cabinet control instruction, perform a correspondingcontrol operation in response to the cabinet control instruction. On thecontrary, if the target cabinet determines that the address of thetarget cabinet is not the same as the address of the target cabinetincluded in the cabinet control instruction, the target cabinet mayignore the cabinet control instruction.

For example, the second control unit E may receive the cabinet controlinstruction that is transmitted by the BBU service unit G and includesan address of the cabinet 2 (that is, the cabinet 2 is the targetcabinet), and transmit the cabinet control instruction to the thirdpower cable communications unit F; the third power cable communicationsunit F modulates the cabinet control instruction onto the power cable,and transmits the cabinet control instruction to the direct currentpower distributor 33 by using the third power input unit I; the directcurrent power distributor 33 transmits the cabinet control instructionto the cabinet 2 by using a power cable; and the cabinet 2 is configuredto demodulate the cabinet control instruction from the power cable andafter determining that an address of the cabinet 2 is the same as theaddress of the cabinet 2 included in the cabinet control instruction,perform a corresponding control operation in response to the cabinetcontrol instruction. In an embodiment, after the cabinet 2 (mainly amonitoring unit) performs the corresponding control operation inresponse to the cabinet control instruction, the cabinet 2 (mainly themonitoring unit) may add a cabinet control result and an address of theBBU 34 to a cabinet control response message, modulate the cabinetcontrol response message onto the power cable, and transmit the cabinetcontrol response message to the direct current power distributor 33; thedirect current power distributor 33 may transmit the cabinet controlresponse message to the third power cable communications unit F by usingthe third power input unit I; and the third power cable communicationsunit F may demodulate the cabinet control response message from thepower cable and transmit the cabinet control response message to the BBUservice unit G by using the second control unit E. The correspondingcontrol operation performed by the target cabinet in response to thecabinet control instruction may include control operations on aninternal environment, a power supply, a heat dissipation system and thelike of the target cabinet.

In the system for controlling a radio base station shown in FIG. 7,out-of-band emergency channels based on power cables can also beestablished between cabinets and multiple RRUs. In this way, if the BBUdoes not need to be connected to monitoring units in the cabinet 1 tothe cabinet n by using monitoring cables, the BBU can control thecabinets by using corresponding power cables. Therefore, monitoringcables between the BBU and the cabinets are saved, and projectinstallation costs and difficulty of a radio base station can bereduced.

FIG. 8 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure. The system for controlling a radio base stationshown in FIG. 8 includes a power supply system 31, a backup power supplysystem 32, a direct current power distributor 33, a BBU 34, and at leastone cabinet. An input port of the direct current power distributor 33 isconnected to direct current ports of the power supply system 31 and thebackup power supply system 32; the BBU 34 and the cabinet arerespectively connected to direct current power supply ports of thedirect current power distributor 33 by using power cables; in actualdeployment, some cabinets (such as a cabinet 1) may be deployed as towerbottom devices together with the BBU 34, the power supply system 31, thebackup power supply system 32, the direct current power distributor 33,and the like, but some cabinets (such as a cabinet 2 to a cabinet n) maybe deployed in an equipment room far away from an RRU 35.

The system for controlling a radio base station shown in FIG. 8 furtherincludes a central monitoring module 36. The central monitoring module36 is deployed independently of the BBU 34, and includes an interfaceunit A, a second power cable communications unit B, a second powerconversion unit C, and a second power input unit D, where the secondpower conversion unit C and the second power cable communications unit Brespectively establish a power cable connection to a direct currentpower supply port of the direct current power distributor 33 by usingthe second power input unit D. That is, by using the second power inputunit D, not only a power cable connection may be implemented between thesecond power conversion unit C and the direct current power supply portof the direct current power distributor 33, but also a power cableconnection may be implemented between the second power cablecommunications unit B and the direct current power supply port of thedirect current power distributor 33. In an embodiment, the second powerinput unit D not only has a function of implementing a power cableconnection between the second power conversion unit C and the directcurrent power supply port of the direct current power distributor 33 anda power cable connection between the second power cable communicationsunit B and the direct current power supply port of the direct currentpower distributor 33 respectively, but also has functions such aslightning protection and overvoltage protection.

The interface unit A is configured to receive a cabinet controlinstruction that is transmitted by the BBU 34 and includes an address ofa target cabinet, and transmit the cabinet control instruction to thesecond power cable communications unit B; the second power cablecommunications unit B is configured to receive the cabinet controlinstruction that is transmitted by the interface unit A, modulate thecabinet control instruction onto a power cable, and transmit the cabinetcontrol instruction to the direct current power distributor 33 by usingthe second power input unit D.

The direct current power distributor 33 is configured to transmit thecabinet control instruction to the target cabinet by using a powercable.

The target cabinet is configured to demodulate the cabinet controlinstruction from the power cable, and after determining that an addressof the target cabinet is the same as the address of the target cabinetincluded in the cabinet control instruction, perform a correspondingcontrol operation in response to the cabinet control instruction.

For example, the interface unit A may receive the cabinet controlinstruction that is transmitted by the BBU 34 and includes an address ofthe cabinet 1 (that is, the address of the cabinet 1 is the address ofthe target cabinet), and transmit the cabinet control instruction to thesecond power cable communications unit B; the second power cablecommunications unit B receives the cabinet control instruction that istransmitted by the interface unit A, modulates the cabinet controlinstruction onto the power cable, and transmits the cabinet controlinstruction to the direct current power distributor 33 by using thesecond power input unit D; the direct current power distributor 33transmits the cabinet control instruction to the cabinet 1 to thecabinet n by using power cables; and the cabinet 1 demodulates thecabinet control instruction from the power cable and after determiningthat an address of the cabinet 1 is the same as the address of thecabinet 1 included in the cabinet control instruction, performs acorresponding control operation in response to the cabinet controlinstruction. However, the cabinet 2 to the cabinet n demodulate thecabinet control instruction from the power cables, and after determiningthat addresses of the cabinet 2 to the cabinet n are not the same as theaddress of the cabinet 1 included in the cabinet control instruction,may ignore the cabinet control instruction.

FIG. 9 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure. The system for controlling a radio base stationshown in FIG. 9 includes a power supply system 31, a backup power supplysystem 32, a direct current power distributor 33, a BBU 34, and at leastone cabinet. An input port of the direct current power distributor 33 isconnected to direct current ports of the power supply system 31 and thebackup power supply system 32; the BBU 34 and the cabinet arerespectively connected to direct current power supply ports of thedirect current power distributor 33 by using power cables; in actualdeployment, some cabinets (such as a cabinet 1) may be deployed as towerbottom devices together with the BBU 34, the power supply system 31, thebackup power supply system 32, the direct current power distributor 33,and the like, but some cabinets (such as a cabinet 2 to a cabinet n) maybe deployed in an equipment room far away from an RRU 35.

The system for controlling a radio base station shown in FIG. 9 furtherincludes a central monitoring module 36. The central monitoring module36 is deployed independently of the BBU 34. In this case, the centralmonitoring module 36 may include a second control unit E and a thirdpower cable communications unit F. The second control unit E isconfigured to receive a cabinet control instruction that is transmittedby a BBU service unit G and includes an address of a target cabinet, andtransmit the cabinet control instruction to the third power cablecommunications unit F. The third power cable communications unit F isconfigured to modulate the cabinet control instruction onto a powercable, and transmit the cabinet control instruction to the directcurrent power distributor 33 by using a third power input unit.

The direct current power distributor 33 is configured to transmit thecabinet control instruction to the target cabinet by using a powercable.

The target cabinet is configured to demodulate the cabinet controlinstruction from the power cable, and after determining that an addressof the target cabinet is the same as the address of the target cabinetincluded in the cabinet control instruction, perform a correspondingcontrol operation in response to the cabinet control instruction.

For example, the second control unit E may receive the cabinet controlinstruction that is transmitted by the BBU service unit G and includesan address of the cabinet 1 (that is, the address of the cabinet 1 isthe address of the target cabinet), and transmit the cabinet controlinstruction to the third power cable communications unit F; the thirdpower cable communications unit F receives the cabinet controlinstruction that is transmitted by the second control unit E, modulatesthe cabinet control instruction onto the power cable, and transmits thecabinet control instruction to the direct current power distributor 33by using the third power input unit I; the direct current powerdistributor 33 transmits the cabinet control instruction to the cabinet1 to the cabinet n by using power cables; and the cabinet 1 demodulatesthe cabinet control instruction from the power cable and afterdetermining that an address of the cabinet 1 is the same as the addressof the cabinet 1 included in the cabinet control instruction, performs acorresponding control operation in response to the cabinet controlinstruction. However, the cabinet 2 to the cabinet n demodulate thecabinet control instruction from the power cables, and after determiningthat addresses of the cabinet 2 to the cabinet n are not the same as theaddress of the cabinet 1 included in the cabinet control instruction,may ignore the cabinet control instruction.

In the systems for controlling a radio base station shown in FIG. 8 andFIG. 9, out-of-band emergency channels based on power cables can also beestablished between cabinets and multiple RRUs. In this way, if the BBUdoes not need to be connected to monitoring units in the cabinet 1 tothe cabinet n by using monitoring cables, the BBU can control thecabinets by using corresponding power cables. Therefore, monitoringcables between the BBU and the cabinets are saved, and projectinstallation costs and difficulty of a radio base station can bereduced.

In the embodiments of the present disclosure, for better understandingthe embodiments of the present disclosure, the following furtherdescribes a structure and functions of a direct current powerdistributor 33 involved in an embodiment of the present disclosure.

FIG. 10 is a schematic structural diagram of a direct current powerdistributor 33 according to an embodiment of the present disclosure. Asshown in FIG. 10, an input port of the direct current power distributor33 is connected to each direct current power supply port (namely, adirect current power supply port 1 to a direct current power supply portn) of the direct current power distributor 33 by using an internalshort-circuit protection unit 331 in order to implement a power cableconnection between the input port of the direct current powerdistributor 33 and any direct current power supply port. That is, apower cable connection may be implemented between any two direct currentpower supply ports of the direct current power distributor 33. In thedirect current power distributor 33 shown in FIG. 10, the input port ofthe direct current power distributor 33 may be connected to directcurrent ports of a power supply system 31 and a backup power supplysystem 32, and is configured to divide a direct current (such as −48 V)input by the power supply system, into multiple direct currents anddistribute the multiple direct currents to different base stationdevices, such as a BBU, an RRU, a central monitoring module, and acabinet. In addition, the direct current power distributor 33 mayfurther provide functions such as overcurrent protection for each of thedistributed direct currents by using the internal short-circuitprotection unit 331. In an actual application, the short-circuitprotection unit 331 may be implemented by using a breaker or a fuse.

In the direct current power distributor 33 shown in FIG. 10, informationreceived by any direct current power supply port of the direct currentpower distributor 33 may be output from other direct current powersupply ports. For example, in the system for controlling a radio basestation shown in FIG. 7, when the direct current power supply port 1 ofthe direct current power distributor 33 receives the RRU controlinformation that is transmitted by the BBU 34 and includes the addressof the RRU 35 and the control instruction, the RRU control informationmay be output from the direct current power supply ports 2 to n by usingeach short-circuit protection unit 331. Correspondingly, all basestation devices (such as the RRU 35 and the cabinet) connected to thedirect current power supply ports 2 to n by using power cables canreceive the RRU control information. However, because the RRU controlinformation includes the address of the RRU 35, the RRU 35 can obtain,by using the first power cable communications unit d, the RRU controlinformation through parsing, and perform a corresponding controloperation. Before parsing the RRU control information, other RRUs andcabinets may first identify that addresses of the other RRUs andcabinets do not match the address of the RRU 35 included in the RRUcontrol information, or after obtaining the RRU control informationthrough parsing, identify that addresses of the other RRUs and cabinetsdo not match the address of the RRU 35 included in the RRU controlinformation, and ignore the RRU control information.

FIG. 11 is a schematic structural diagram of another system forcontrolling a radio base station according to an embodiment of thepresent disclosure. The system for controlling a radio base stationshown in FIG. 11 may include a power supply system 31, a backup powersupply system 32, a direct current power distributor 33, a BBU 34, andat least two RRUs (namely, an RRU 1 to an RRU n). The power supplysystem 31, the backup power supply system 32, and the direct currentpower distributor 33 may be installed at the tower bottom as towerbottom devices for ease of manual maintenance; and the at least two RRUs(namely, the RRU 1 to the RRU n) may be installed at the tower top closeto an antenna to reduce a feeder loss. The BBU 34 is installed in anequipment room far away from the RRUs (namely, the RRU 1 to the RRU n).An input port of the direct current power distributor 33 is connected todirect current ports of the power supply system 31 and the backup powersupply system 32, and the BBU 34 is communicatively connected to the atleast two RRUs (namely, the RRU 1 to the RRU n) by using CPRIs, wherethe at least two RRU (namely, the RRU 1 to the RRU n) include a firstRRU and a target RRU.

The BBU 34 is configured to transmit RRU control information to thefirst RRU by using the CPRI, where the RRU control information includesan address of the target RRU and a control instruction.

The first RRU is configured to modulate the RRU control information ontoa power cable, and transmit the RRU control information to the directcurrent power distributor 33.

The direct current power distributor 33 is configured to transmit theRRU control information to the target RRU by using a power cable.

The target RRU is configured to demodulate, from the power cable, theRRU control information transmitted by the direct current powerdistributor 33, and after determining that an address of the target RRUis the same as the address of the target RRU included in the RRU controlinformation, perform a corresponding control operation in response tothe control instruction included in the RRU control information.

In the system for controlling a radio base station shown in FIG. 11,each RRU may include a first power input unit a, a first powerconversion unit b, a first control unit c, a first power cablecommunications unit d, an RRU service unit e, and a CPRI unit f, wherethe first power conversion unit b and the first power cablecommunications unit d respectively establish a power cable connection toa direct current power supply port of the direct current powerdistributor 33 by using the first power input unit a. That is, by usingthe first power input unit a, not only a power cable connection may beimplemented between the first power conversion unit b and the directcurrent power supply port of the direct current power distributor 33,but also a power cable connection may be implemented between the firstpower cable communications unit d and the direct current power supplyport of the direct current power distributor 33. In an embodiment, thefirst power input unit a not only has a function of implementing a powercable connection between the first power conversion unit b and thedirect current power supply port of the direct current power distributor33 and a power cable connection between the first power cablecommunications unit d and the direct current power supply port of thedirect current power distributor 33 respectively, but also has functionssuch as lightning protection and overvoltage protection.

The first control unit c is communicatively connected to the first powercable communications unit d and the RRU service unit e; the RRU serviceunit e is communicatively connected to the CPRI unit f, and the CPRIunit f is configured to communicatively connect to the BBU 34, that is,the RRU service unit e is communicatively connected to the BBU 34 byusing the CPRI unit f.

The BBU 34 may transmit the RRU control information that includes theaddress of the target RRU and the control instruction to the RRU serviceunit e of the RRU 1 by using the CPRI unit f of the RRU 1; the RRUservice unit e of the RRU 1 may transmit the RRU control information tothe first control unit c of the RRU 1; the first control unit c of theRRU 1 may transmit the RRU control information to the first power cablecommunications unit d of the RRU 1; the first power cable communicationsunit d of the RRU 1 may modulate the RRU control information onto thepower cable, and transmit the RRU control information to the directcurrent power distributor 33 by using the first power input unit a ofthe RRU 1; and correspondingly, the direct current power distributor 33is configured to transmit the RRU control information to the target RRUby using the power cable; the first power cable communications unit d ofthe target RRU is configured to demodulate, from the power cable, theRRU control information that is transmitted by the direct current powerdistributor 33 by using the first power input unit a of the target RRU,and after determining that an address of the target RRU is the same asthe address of the target RRU included in the RRU control information,transmit the demodulated RRU control information to the first controlunit c of the target RRU; the first control unit c of the target RRU isconfigured to identify a to-be-performed operation type according to thecontrol instruction included in the RRU control information; and whenthe operation type is an operation type performed by an RRU serviceunit, the first control unit c of the target RRU transmits the controlinstruction to the RRU service unit e of the target RRU in order totrigger the RRU service unit e of the target RRU to perform acorresponding control operation in response to the control instruction.

Example 1

The BBU 34 may transmit RRU control information that includes an addressof the RRU n and a control instruction to the RRU service unit e of theRRU 1 by using the CPRI unit f of the RRU 1; the RRU service unit e ofthe RRU 1 transmits the RRU control information to the first controlunit c of the RRU 1; the first control unit c of the RRU 1 transmits theRRU control information to the first power cable communications unit dof the RRU 1; the first power cable communications unit d of the RRU 1modulates the RRU control information onto the power cable, andtransmits the RRU control information to the direct current powerdistributor 33 by using the first power input unit a of the RRU 1; andcorrespondingly, the direct current power distributor 33 transmits theRRU control information to the RRU n by using a power cable; the firstpower cable communications unit d of the RRU n demodulates, from thepower cable, the RRU control information that is transmitted by thedirect current power distributor 33 by using the first power input unita of the RRU n, and after determining that an address of the RRU n isthe same as the address of the RRU n included in the RRU controlinformation, transmits the demodulated RRU control information to thefirst control unit c of the RRU n; the first control unit c of the RRU nidentifies a to-be-performed operation type according to the controlinstruction included in the RRU control information; and when theoperation type is an operation type performed by an RRU service unit,the first control unit c of the RRU n transmits the control instructionto the RRU service unit e of the RRU n in order to trigger the RRUservice unit e of the RRU n to perform a corresponding control operationin response to the control instruction.

It can be seen that, in the system for controlling a radio base stationshown in FIG. 11, out-of-band emergency channels based on power cablescan be established among multiple RRUs such that even if a uniquecommunications interface CPRI between a BBU and a certain target RRU isabnormal, the BBU can still effectively control the target RRU by usingan out-of-band emergency channel between any RRU (a uniquecommunications interface CPRI of the RRU is normal) and the target RRU.Dispatching a person to a site for maintenance can be avoided,maintenance costs can be reduced, and a service interruption time of anRRU can also be shortened greatly.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 11, the first power conversion unit bof each RRU is communicatively connected to the first control unit c ofthe RRU, and correspondingly, the first control unit c is furtherconfigured to transmit the control instruction to the first powerconversion unit b of the RRU when identifying, according to the controlinstruction, that the to-be-performed operation type is a poweroperation type in order to trigger the first power conversion unit b ofthe RRU to perform a corresponding power control operation in responseto the control instruction, where the power control operation includes apower-on or power-off control operation. In this optional implementationmanner, the BBU 34 may also implement flexible power control on the RRUwithout using the CPRI unit f of the RRU such that incapability ofimplementing complete power-off on the RRU by the BBU 34 by using theCPRI unit f can be overcome effectively. This is because the CPRI unit fcannot communicate normally when the BBU 34 implements completepower-off on the RRU by using the CPRI unit f, and in this case, the BBU34 cannot control the RRU to power on again.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 11, each RRU further includes a firstmonitoring and collecting unit g, where the first monitoring andcollecting unit g is communicatively connected to the first control unitc. The first monitoring and collecting unit g is configured to collectstatus information of the RRU and transmit the status information to thefirst control unit c of the RRU, where the status information of the RRUincludes status information of the RRU service unit e of the RRU, suchas voltage status information, temperature status information, andoutput power status information of the RRU service unit e.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 11, the first control unit c of thetarget RRU is further configured to transmit the control instruction tothe first monitoring and collecting unit g of the target RRU whenidentifying, according to the control instruction, that theto-be-performed operation type is a status information collectionoperation type in order to trigger the first monitoring and collectingunit g to collect status information of the target RRU and transmit thestatus information to the first control unit c of the target RRU.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. 11, when the operation type is theoperation type performed by the RRU service unit, the first control unitc of the target RRU is further configured to receive an RRU service unitcontrol result transmitted by the RRU service unit e of the target RRU,add the RRU service unit control result and an address of the BBU toresponse information, and transmit the response information to the firstpower cable communications unit d of the target RRU; or when theoperation type is the power operation type, the first control unit c ofthe target RRU is further configured to receive a target RRU powercontrol result transmitted by the first power conversion unit b of thetarget RRU, add the target RRU power control result and an address ofthe BBU to response information, and transmit the response informationto the first power cable communications unit d of the target RRU; andthe first power cable communications unit d of the target RRU is furtherconfigured to modulate the response information onto the power cable,and transmit the response information to the direct current powerdistributor 33 by using the first power input unit a of the target RRU;the direct current power distributor 33 is further configured totransmit the response information to the first power cablecommunications unit d of the first RRU by using the first power inputunit a of the first RRU; the first power cable communications unit d ofthe first RRU is further configured to transmit the response informationto the RRU service unit e of the first RRU by using the first controlunit c of the first RRU; and the RRU service unit e of the first RRU isfurther configured to transmit the response information to the BBU 34 byusing the CPRI unit f of the first RRU.

In an optional implementation manner, in the system for controlling aradio base station shown in FIG. II, when the operation type is thestatus information collection operation type, the first control unit cof the target RRU is further configured to add the status information ofthe target RRU and an address of the BBU to status feedback information,and transmit the status feedback information to the first power cablecommunications unit d of the target RRU; and the first power cablecommunications unit d of the target RRU is further configured tomodulate the status feedback information onto the power cable, andtransmit the status feedback information to the direct current powerdistributor 33 by using the first power input unit a of the target RRU;the direct current power distributor 33 is further configured totransmit the status feedback information to the first power cablecommunications unit d of the first RRU by using the first power inputunit a of the first RRU; the first power cable communications unit d ofthe first RRU is further configured to transmit the status feedbackinformation to the RRU service unit e of the first RRU by using thefirst control unit c of the first RRU; and the RRU service unit e of thefirst RRU is further configured to transmit the status feedbackinformation to the BBU 34 by using the CPRI unit f of the first RRU.

With reference to the foregoing Example 1, an example is furtherprovided. Assuming that the target RRU is the RRU n, if the operationtype is the operation type performed by the RRU service unit, the firstcontrol unit c of the RRU n may further receive an RRU service unitcontrol result transmitted by the RRU service unit e of the RRU n, addthe RRU service unit control result and the address of the BBU 34 toresponse information, and transmit the response information to the firstpower cable communications unit d of the RRU n; or when the operationtype is the power operation type, the first control unit c of the RRU nmay further receive an RRU n power control result transmitted by thefirst power conversion unit b of the RRU n, add the RRU n power controlresult and the address of the BBU 34 to response information, andtransmit the response information to the first power cablecommunications unit d of the RRU n; and the first power cablecommunications unit d of the RRU n further modulates the responseinformation onto the power cable, and transmits the response informationto the direct current power distributor 33 by using the first powerinput unit a of the RRU n; the direct current power distributor 33 isfurther configured to transmit the response information to the firstpower cable communications unit d of the RRU 1 by using the first powerinput unit a of the RRU 1; the first power cable communications unit dof the RRU 1 further transmits the response information to the RRUservice unit e of the RRU 1 by using the first control unit c of the RRU1; and the RRU service unit e of the RRU 1 further transmits theresponse information to the BBU 34 by using the CPRI unit f of the RRU1.

FIG. 12 is a schematic structural diagram of another system forcontrolling a radio base station that is obtained by optimizing thesystem for controlling a radio base station shown in FIG. 11 accordingto an embodiment of the present disclosure. Compared with the system forcontrolling a radio base station shown in FIG. 11, the system forcontrolling a radio base station shown in FIG. 12 may further include atleast one cabinet, where each cabinet (mainly including a monitoringunit) is connected to a direct current power supply port of a directcurrent power distributor 33 by using a power cable; in actualdeployment, some cabinets (such as a cabinet 1) may be deployed as towerbottom devices together with a BBU 34, a power supply system 31, abackup power supply system 32, the direct current power distributor 33,and the like, but some cabinets (such as a cabinet 2 to a cabinet n) maybe deployed in an equipment room far away from RRUs (namely, an RRU 1 toan RRU n).

The BBU 34 is further configured to transmit a cabinet controlinstruction including an address of a target cabinet to an RRU serviceunit e of a first RRU by using a CPRI unit f of the first RRU; the RRUservice unit e of the first RRU is configured to transmit the targetcabinet control instruction to a first control unit c of the first RRU;the first control unit c of the first RRU is configured to transmit thetarget cabinet control instruction to a first power cable communicationsunit d of the first RRU; the first power cable communications unit d ofthe first RRU is configured to modulate the target cabinet controlinstruction onto a power cable, and transmit the target cabinet controlinstruction to the direct current power distributor 33 by using a firstpower input unit a of the first RRU; and correspondingly, the directcurrent power distributor 33 is configured to transmit the targetcabinet control instruction to the target cabinet by using a powercable; the target cabinet is configured to demodulate the cabinetcontrol instruction from the power cable, and after determining that anaddress of the target cabinet is the same as the address of the targetcabinet included in the cabinet control instruction, perform acorresponding control operation in response to the cabinet controlinstruction.

For example, the BBU 34 may transmit, by using a CPRI unit f of the RRU1, a cabinet control instruction that includes an address of the cabinet2 to an RRU service unit e of the RRU 1; the RRU service unit e of theRRU 1 transmits the target cabinet control instruction to a firstcontrol unit c of the RRU 1; the first control unit c of the RRU 1transmits the target cabinet control instruction to a first power cablecommunications unit d of the RRU 1; the first power cable communicationsunit d of the RRU 1 modulates the target cabinet control instructiononto the power cable, and transmits the target cabinet controlinstruction to the direct current power distributor 33 by using a firstpower input unit a of the RRU 1; and correspondingly, the direct currentpower distributor 33 transmits the cabinet control instruction to thecabinet 2 by using a power cable in order to trigger the cabinet 2 toperform a corresponding control operation in response to the cabinetcontrol instruction.

In the system for controlling a radio base station shown in FIG. 12, astructure and functions of the direct current power distributor 33 arealready described in the foregoing embodiment, and details are notdescribed herein again.

In the system for controlling a radio base station shown in FIG. 12,out-of-band emergency channels based on power cables can also beestablished between cabinets and multiple RRUs. In this way, if the BBUdoes not need to be connected to monitoring units in the cabinet 1 tothe cabinet n by using monitoring cables, the BBU can control thecabinets by using corresponding power cables. Therefore, monitoringcables between the BBU and the cabinets are saved, and projectinstallation costs and difficulty of a radio base station can bereduced.

FIG. 13 is a schematic structural diagram of an RRU according to anembodiment of the present disclosure. A structure and functions of theRRU shown in FIG. 13 are the same as the structure and functions of theRRU 35 described in the foregoing embodiment, and details are notdescribed in this embodiment of the present disclosure again. Anout-of-band emergency channel based on a power cable can be establishedbetween the RRU described in FIG. 13 and a BBU such that even if aunique communications interface CPRI between the BBU and the RRU isabnormal, the BBU can still effectively control the RRU by using theout-of-band emergency channel. In addition, out-of-band emergencychannels based on power cables can also be established between the RRUdescribed in FIG. 13 and other RRUs and cabinets such that even if aunique communications interface CPRI between the BBU and a certaintarget RRU is abnormal, the BBU can still effectively control the targetRRU by using an out-of-band emergency channel between the RRU describedin FIG. 13 (a unique communications interface CPRI of the RRU is normal)and the target RRU. Alternatively, the BBU can further effectivelycontrol a target cabinet by using an out-of-band emergency channelbetween the RRU described in FIG. 13 (a unique communications interfaceCPRI of the RRU is normal) and the target cabinet.

FIG. 14 is a schematic structural diagram of a BBU according to anembodiment of the present disclosure. A structure and functions of theBBU shown in FIG. 14 are the same as the structure and functions of theBBU 34 described in the foregoing embodiment, and details are notdescribed in this embodiment of the present disclosure again. Anout-of-band emergency channel based on a power cable can be establishedbetween the BBU described in FIG. 14 and an RRU such that even if aunique communications interface CPRI between the BBU and the RRU isabnormal, the BBU can still effectively control the RRU by using theout-of-band emergency channel. In addition, out-of-band emergencychannels based on power cables can also be established between the BBUdescribed in FIG. 14 and cabinets. In this way, if the BBU does not needto be connected to monitoring units in the cabinets by using monitoringcables, the BBU can control the cabinets by using corresponding powercables. Therefore, monitoring cables between the BBU and the cabinetsare saved, and project installation costs and difficulty of a radio basestation can be reduced.

FIG. 15 is a schematic structural diagram of a central monitoring moduleaccording to an embodiment of the present disclosure. A structure andfunctions of the central monitoring module shown in FIG. 15 are the sameas the structure and functions of the central monitoring module 36described in the foregoing embodiment, and details are not described inthis embodiment of the present disclosure again. An out-of-bandemergency channel based on a power cable can be established between aBBU and an RRU by using the central monitoring module shown in FIG. 15such that even if a unique communications interface CPRI between the BBUand the RRU is abnormal, the BBU can still effectively control the RRUby using the out-of-band emergency channel. In addition, out-of-bandemergency channels based on power cables can also be established betweenthe BBU and cabinets by using the central monitoring module shown inFIG. 15. In this way, if the BBU does not need to be connected tomonitoring units in the cabinets by using monitoring cables, the BBU cancontrol the cabinets by using corresponding power cables. Therefore,monitoring cables between the BBU and the cabinets are saved, andproject installation costs and difficulty of a radio base station can bereduced.

FIG. 16 is a schematic flowchart of a method for controlling a radiobase station according to an embodiment of the present disclosure. Themethod for controlling a radio base station is described from aperspective of an RRU. As shown in FIG. 16, the method for controlling aradio base station may include the following steps.

A first power cable communications unit d of an RRU demodulates, from apower cable, RRU control information that is transmitted by a directcurrent power distributor 33 by using a first power input unit a of theRRU and includes a control instruction.

1602. The first power cable communications unit d of the RRU transmitsthe demodulated RRU control information to a first control unit c of theRRU.

1603. The first control unit c of the RRU identifies a to-be-performedoperation type according to the control instruction included in the RRUcontrol information, where the operation type is any one of an operationtype performed by an RRU service unit e, a power operation type, and astatus information collection operation type; and when the operationtype is the operation type performed by the RRU service unit e,transmits the control instruction to the RRU service unit e of the RRUin order to trigger the RRU service unit e to perform a correspondingcontrol operation.

1604. The first control unit c of the RRU receives an RRU service unitcontrol result transmitted by the RRU service unit e, adds the RRUservice unit control result and an address of a BBU 34 to responseinformation, and transmits the response information to the first powercable communications unit d of the RRU.

1605. The first power cable communications unit d of the RRU modulatesthe response information onto the power cable, and transmits theresponse information to the direct current power distributor 33 by usingthe first power input unit a of the RRU in order to trigger the directcurrent power distributor 33 to transmit the response information to acentral monitoring module 36 by using a power cable such that thecentral monitoring module 36 demodulates the response information fromthe power cable and transmits the response information to the BBU 34; orso as to trigger the direct current power distributor 33 to transmit theresponse information to the BBU 34 by using a power cable such that theBBU 34 demodulates the response information from the power cable andtransmits the response information to a BBU service unit of the BBU 34.

In an embodiment, the RRU control information further includes an RRUaddress, where the RRU address included in the RRU control informationis the same as an address of the RRU to which the first power cablecommunications unit d belongs.

In an optional implementation manner, in the method described in FIG.16, when the first control unit c of the RRU identifies, according tothe control instruction included in the RRU control information, thatthe to-be-performed operation type is the power operation type, thefirst control unit c of the RRU may also transmit the controlinstruction to a first power conversion unit b of the RRU in order totrigger the first power conversion unit b of the RRU to perform acorresponding power control operation in response to the controlinstruction, where the power control operation includes a power-on orpower-off control operation.

Correspondingly, the first control unit c of the RRU may further receivean RRU power control result transmitted by the first power conversionunit b, add the RRU power control result and the address of the BBU toresponse information, and transmit the response information to the firstpower cable communications unit d of the RRU.

Correspondingly, the first power cable communications unit d of the RRUmay further modulate the response information onto the power cable, andtransmit the response information to the direct current powerdistributor 33 by using the first power input unit a of the RRU in orderto trigger the direct current power distributor 33 to transmit theresponse information to the central monitoring module 36 by using thepower cable such that the central monitoring module 36 demodulates theresponse information from the power cable and transmits the responseinformation to the BBU 34; or so as to trigger the direct current powerdistributor 33 to transmit the response information to the BBU 34 byusing the power cable such that the BBU 34 demodulates the responseinformation from the power cable and transmits the response informationto the BBU service unit of the BBU 34.

In an optional implementation manner, the method described in FIG. 16may further include the following step:

A first monitoring and collecting unit g of the RRU collects statusinformation of the RRU, and transmits the status information to thefirst control unit c of the RRU, where the status information of the RRUincludes status information of the RRU service unit e.

Optionally, when the first control unit c of the RRU may identify,according to the control instruction included in the RRU controlinformation, that the to-be-performed operation type is the statusinformation collection operation type, the first control unit c of theRRU transmits the control instruction to the first monitoring andcollecting unit g of the RRU in order to trigger the first monitoringand collecting unit g of the RRU to collect the status information ofthe RRU and transmit the status information to the first control unit cof the RRU.

Correspondingly, the first control unit c of the RRU may further add thestatus information of the RRU and the address of the BBU to statusfeedback information, and transmit the status feedback information tothe first power cable communications unit d of the RRU.

Correspondingly, the first power cable communications unit d of the RRUmodulates the status feedback information onto the power cable, andtransmits the status feedback information to the direct current powerdistributor 33 by using the first power input unit a of the RRU in orderto trigger the direct current power distributor 33 to transmit thestatus feedback information to the central monitoring module 36 by usingthe power cable such that the central monitoring module 36 demodulatesthe status feedback information from the power cable and transmits thestatus feedback information to the BBU 34; or so as to trigger thedirect current power distributor 33 to transmit the status feedbackinformation to the BBU 34 by using the power cable such that the BBU 34demodulates the status feedback information from the power cable andtransmits the status feedback information to the BBU service unit of theBBU 34.

In an optional implementation manner, the method described in FIG. 16may further include the following steps.

11. The RRU service unit e of the RRU receives, by using a CPRI unit fof the RRU, control information that is transmitted by the BBU 34 andincludes an address of a target RRU and a control instruction, andtransmits the RRU control information to the first control unit c of theRRU.

12. The first control unit c of the RRU transmits the RRU controlinformation to the first power cable communications unit d of the RRU.

13. The first power cable communications unit d of the RRU modulates theRRU control information onto the power cable, and transmits the RRUcontrol information to the direct current power distributor 33 by usingthe first power input unit a of the RRU in order to trigger the directcurrent power distributor 33 to transmit the RRU control informationthat includes the address of the target RRU and the control instructionto the target RRU by using a power cable, to perform a correspondingcontrol operation.

In an optional implementation manner, the method described in FIG. 16may further include the following steps.

21. The RRU service unit e of the RRU receives, by using a CPRI unit f,a cabinet control instruction that is transmitted by the BBU 34 andincludes an address of a target cabinet, and transmits the cabinetcontrol instruction to the first control unit c of the RRU.

22. The first control unit c of the RRU transmits the cabinet controlinstruction to the first power cable communications unit d of the RRU.

23. The first power cable communications unit d of the RRU modulates thecabinet control instruction onto the power cable, and transmits thecabinet control instruction to the direct current power distributor 33by using the first power input unit a of the RRU in order to trigger thedirect current power distributor 33 to transmit the cabinet controlinstruction to the target cabinet by using a power cable in order totrigger the target cabinet to perform a corresponding control operationin response to the cabinet control instruction.

In the method for controlling a radio base station described in FIG. 16,an out-of-band emergency channel based on a power cable can beestablished between an RRU and a BBU such that even if a uniquecommunications interface CPRI between the RRU and the BBU is abnormal,the RRU can still be effectively controlled by the BBU by using theout-of-band emergency channel. In addition, in the method forcontrolling a radio base station described in FIG. 16, out-of-bandemergency channels based on power cables can also be established betweenan RRU and other RRUs and cabinets such that even if a uniquecommunications interface CPRI between a BBU and a certain target RRU isabnormal, the BBU can still effectively control the target RRU by usingan out-of-band emergency channel between the RRU (a uniquecommunications interface CPRI of the RRU is normal) and the target RRU.Alternatively, the BBU can further effectively control a target cabinetby using an out-of-band emergency channel between the RRU (a uniquecommunications interface CPRI of the RRU is normal) and the targetcabinet.

FIG. 17 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure.The method fir controlling a radio base station is described from aperspective of a central monitoring module. As shown in FIG. 17, themethod for controlling a radio base station may include the followingsteps.

1701. A central monitoring module 36 receives RRU control informationthat is transmitted by a BBU 34 and includes a control instruction.

1702. The central monitoring module 36 modulates the RRU controlinformation onto a power cable, and transmits the RRU controlinformation to a direct current power distributor 33 in order to triggerthe direct current power distributor 33 to transmit the RRU controlinformation to an RRU by using a power cable such that the RRUdemodulates the RRU control information from the power cable andperforms a corresponding control operation in response to the controlinstruction.

In an embodiment, the RRU control information further includes an RRUaddress, where an address of the RRU that demodulates the RRU controlinformation from the power cable is the same as the RRU address includedin the RRU control information.

In an optional implementation manner, the method described in FIG. 17may further include the following step:

When the RRU identifies, according to the control instruction includedin the RRU control information, that a to-be-performed operation type isan operation type performed by an RRU service unit, the centralmonitoring module 36 demodulates, from the power cable, responseinformation that is transmitted by the direct current power distributor33 and includes an RRU service unit control result and an address of theBBU, and transmits the response information to the BBU; or when the RRUidentifies, according to the control instruction included in the RRUcontrol information, that a to-be-performed operation type is a poweroperation type, the central monitoring module 36 demodulates, from thepower cable, response information that is transmitted by the directcurrent power distributor 33 and includes an RRU power control resultand an address of the BBU, and transmits the response information to theBBU.

In an optional implementation manner, the method described in FIG. 17may further include the following step:

When the RRU identifies, according to the control instruction includedin the RRU control information, that a to-be-performed operation type isa status information collection operation type, the central monitoringmodule 36 demodulates, from the power cable, status feedback informationthat is transmitted by the direct current power distributor 33 andincludes status information of the RRU and an address of the BBU, andtransmits the status feedback information to the BBU.

In an optional implementation manner, the method described in FIG. 17may further include the following step:

The central monitoring module 36 receives a cabinet control instructionthat is transmitted by the BBU and includes an address of a targetcabinet, modulates the cabinet control instruction onto the power cable,and transmits the cabinet control instruction to the direct currentpower distributor 33 such that the direct current power distributor 33transmits the cabinet control instruction to the target cabinet by usinga power cable in order to trigger the target cabinet to demodulate thecabinet control instruction from the power cable and after determiningthat an address of the target cabinet is the same as the address of thetarget cabinet included in the cabinet control instruction, perform acorresponding control operation in response to the cabinet controlinstruction.

In the method for controlling a radio base station described in FIG. 17,an out-of-band emergency channel based on a power cable can beestablished between an RRU and a BBU such that even if a uniquecommunications interface CPRI between the RRU and the BBU is abnormal,the RRU can still be effectively controlled by the BBU by using theout-of-band emergency channel. In addition, in the method forcontrolling a radio base station described in FIG. 17, out-of-bandemergency channels based on power cables can be established between aBBU and cabinets such that the BBU can effectively control a targetcabinet by using an out-of-band emergency channel between the BBU andthe target cabinet.

FIG. 18 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure.The method for controlling a radio base station is described from aperspective of a BBU. As shown in FIG. 18, the method for controlling aradio base station may include the following steps.

1801. A BBU service unit G of a BBU transmits RRU control informationincluding a control instruction to a second control unit E of the BBU.

1802. The second control unit E of the BBU receives the RRU controlinformation that is transmitted by the BBU service unit G and includesthe control instruction, and transmits the RRU control information to athird power cable communications unit F of the BBU.

1803. The third power cable communications unit F of the BBU modulatesthe RRU control information onto a power cable, and transmits the RRUcontrol information to a direct current power distributor 33 by using athird power input unit I of the BBU in order to trigger the directcurrent power distributor 33 to transmit the RRU control information toan RRU by using a power cable such that the RRU demodulates the RRUcontrol information from the power cable and performs a correspondingcontrol operation in response to the control instruction.

In an embodiment, the RRU control information further includes an RRUaddress, where an address of the RRU that demodulates the RRU controlinformation from the power cable is the same as the RRU address includedin the RRU control information.

In an optional implementation manner, the method described in FIG. 18may further include the following steps.

When the RRU identifies, according to the control instruction includedin the RRU control information, that a to-be-performed operation type isan operation type performed by an RRU service unit, the third powercable communications unit F of the BBU demodulates, from the powercable, response information that is transmitted by the direct currentpower distributor 33 by using the third power input unit I of the BBUand includes an RRU service unit control result and an address of theBBU, and transmits the response information to the second control unit Eof the BBU; or when the RRU identifies, according to the controlinstruction included in the RRU control information, that ato-be-performed operation type is a power operation type, the thirdpower cable communications unit F of the BBU demodulates, from the powercable, response information that is transmitted by the direct currentpower distributor 33 by using the third power input unit I of the BBUand includes an RRU power control result and an address of the BBU, andtransmits the response information to the second control unit E of theBBU; and the second control unit E of the BBU transmits the responseinformation to the BBU service unit G of the BBU.

In an optional implementation manner, the method described in FIG. 18may further include the following steps.

When the RRU identifies, according to the control instruction includedin the RRU control information, that a to-be-performed operation type isa status information collection operation type, the third power cablecommunications unit F of the BBU demodulates, from the power cable,status feedback information that is transmitted by the direct currentpower distributor 33 by using the third power input unit I of the BBUand includes status information of the RRU and an address of the BBU,and transmits the status feedback information to the second control unitE of the BBU; and the second control unit E of the BBU transmits thestatus feedback information to the BBU service unit G of the BBU.

In an optional implementation manner, the method described in FIG. 18may further include the following steps.

The BBU service unit G of the BBU transmits a cabinet controlinstruction including an address of a target cabinet to the secondcontrol unit E of the BBU; the second control unit E of the BBU receivesthe cabinet control instruction transmitted by the BBU service unit G ofthe BBU, and transmits the cabinet control instruction to the thirdpower cable communications unit F of the BBU; and the third power cablecommunications unit F of the BBU modulates the cabinet controlinstruction onto a power cable, and transmits the cabinet controlinstruction to the direct current power distributor 33 by using thethird power input unit I of the BBU such that the direct current powerdistributor 33 transmits the cabinet control instruction to the targetcabinet by using a power cable in order to trigger the target cabinet todemodulate the cabinet control instruction from the power cable andafter determining that an address of the target cabinet is the same asthe address of the target cabinet included in the cabinet controlinstruction, perform a corresponding control operation in response tothe cabinet control instruction.

In the method for controlling a radio base station described in FIG. 18,an out-of-band emergency channel based on a power cable can beestablished between an RRU and a BBU such that even if a uniquecommunications interface CPRI between the RRU and the BBU is abnormal,the BBU can still effectively control the RRU by using the out-of-bandemergency channel. In addition, in the method for controlling a radiobase station described in FIG. 18, out-of-band emergency channels basedon power cables can be established between a BBU and cabinets such thatthe BBU can effectively control a target cabinet by using an out-of-bandemergency channel between the BBU and the target cabinet.

FIG. 19 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure.The method for controlling a radio base station is described from aperspective of a central monitoring module 36. As shown in FIG. 19, themethod for controlling a radio base station may include the followingsteps.

1901. A central monitoring module 36 receives a cabinet controlinstruction that is transmitted by a BBU and includes an address of atarget cabinet.

1902. The central monitoring module 36 modulates the cabinet controlinstruction onto a power cable, and transmits the cabinet controlinstruction to a direct current power distributor 33 such that thedirect current power distributor 33 transmits the cabinet controlinstruction to the target cabinet by using a power cable in order totrigger the target cabinet to demodulate the cabinet control instructionfrom the power cable and after determining that an address of the targetcabinet is the same as the address of the target cabinet included in thecabinet control instruction, perform a corresponding control operationin response to the cabinet control instruction.

FIG. 20 is a schematic flowchart of another method for controlling aradio base station according to an embodiment of the present disclosure.The method for controlling a radio base station is described from aperspective of a BBU 34. As shown in FIG. 20, the method for controllinga radio base station may include the following steps.

2001. A BBU service unit G of a BBU 34 transmits a cabinet controlinstruction including an address of a target cabinet to a second controlunit E of the BBU 34.

2002. The second control unit E of the BBU 34 receives the cabinetcontrol instruction transmitted by the BBU service unit G of the BBU,and transmits the cabinet control instruction to a third power cablecommunications unit F of the BBU 34.

2003. The third power cable communications unit F of the BBU 34modulates the cabinet control instruction onto a power cable, andtransmits the cabinet control instruction to a direct current powerdistributor 33 by using a third power input unit I of the BBU 34 suchthat the direct current power distributor 33 transmits the cabinetcontrol instruction to the target cabinet by using a power cable inorder to trigger the target cabinet to demodulate the cabinet controlinstruction from the power cable and after determining that an addressof the target cabinet is the same as the address of the target cabinetincluded in the cabinet control instruction, perform a correspondingcontrol operation in response to the cabinet control instruction.

In the methods described in FIG. 19 and FIG. 20, out-of-band emergencychannels based on power cables can be established between a BBU andcabinets. In this way, if the BBU does not need to be connected tomonitoring units in the cabinets by using monitoring cables, the BBU cancontrol the cabinets by using corresponding power cables. Therefore,monitoring cables between the BBU and the cabinets are saved, andproject installation costs and difficulty of a radio base station can bereduced.

A person of ordinary skill in the art may understand that all or some ofthe steps of the methods in the embodiments may be implemented by aprogram instructing relevant hardware. The program may be stored in acomputer readable storage medium. The storage medium may include a flashmemory, a read-only memory (ROM), a random access memory (RAM), amagnetic disk, and an optical disc.

A system and method for controlling a radio base station, and a relateddevice that are disclosed by the embodiments of the present disclosureare described in detail above. In the specification, specific examplesare used to describe principles and implementation manners of thepresent disclosure, and the foregoing descriptions of the embodimentsare only intended to help understand the method and core idea of thepresent disclosure. In addition, a person of ordinary skill in the artmay, based on the idea of the present disclosure, make modifications andvariations with respect to the specific implementation manners and theapplication scope. In conclusion, content of the specification shall notbe construed as a limitation to the present disclosure.

What is claimed is:
 1. A system for controlling a radio base station,the system comprising: a power supply; a backup power supply; a directcurrent power distributor comprising an input port coupled to directcurrent ports of the power supply and the backup power supply; at leasttwo remote radio units (RRUs) comprising a first RRU and a target RRU,the at least two RRUs coupled to direct current power supply ports ofthe direct current power distributor using power cables; and; a basebandunit (BBU) coupled to the at least two RRUs using a common public radiointerface (CPRI), the BBU configured to transmit RRU control informationto the first RRU using the CPRI, the RRU control information comprisingaddress information and a control instruction, the first RRU configuredto: modulate the RRU control information onto the power cable; andtransmit the RRU control information to the direct current powerdistributor, the direct current power distributor configured to transmitthe RRU control information to the target RRU using the power cable, andthe target RRU configured to: demodulate, from the power cable, the RRUcontrol information from the direct current power distributor; andperform a corresponding control operation in response to the controlinstruction when an address of the target RRU matches the addressinformation in the RRU control information.
 2. The control system ofclaim 1, wherein the target RRU comprises: a first power cablecommunicator; a first power input configured to transmit, to the firstpower cable communicator using a power cable, the RRU controlinformation; a CPRI unit; an RRU service unit configured to couple tothe BBU using the CPRI unit; a first controller coupled to the firstpower cable communicator and the RRU service unit; and a first powerconverter configured to: perform magnitude conversion on a directcurrent distributed by the direct current power distributor; and outputa converted direct current to the first power cable communicator, thefirst controller, and the RRU service unit, the first power converterand the first power cable communicator each establish a power cableconnection to the direct current power supply port of the direct currentpower distributor using the first power input, the first power cablecommunicator configured to: demodulate, from the power cable, the RRUcontrol information; and transmit the RRU control information to thefirst controller after determining that the address of the target RRU isthe same as the address of the target RRU comprised in the RRU controlinformation, the first controller configured to: identify ato-be-performed operation type according to the control instructioncomprised in the RRU control information, the operation type comprisesone of an operation type performed by the RRU service unit, a poweroperation type, or a status information collection operation type; andtransmit the control instruction to the RRU service unit when theoperation type is the operation type performed by the RRU service unit.3. The control system of claim 2, wherein the first power converter iscoupled to the first controller, and the first controller is furtherconfigured to transmit the control instruction to the first powerconverter when the operation type is the power operation type.
 4. Thecontrol system of claim 2, wherein the target RRU further comprises afirst monitor and collector coupled to the first controller, the firstcontroller further configured to transmit the control instruction to thefirst monitor and collector when the operation type is the statusinformation collection operation type.
 5. The control system of claim 2,wherein when the operation type is the operation type performed by theRRU service unit, the first controller is further configured to: receivean RRU service unit control result from the RRU service unit; add theRRU service unit control result and an address of the BBU to responseinformation; and transmit the response information to the first powercable communicator; and when the operation type is the power operationtype, the first controller is further configured to: receive a targetRRU power control result from the first power converter; add the targetRRU power control result and an address of the BBU to responseinformation; and transmit the response information to the first powercable communicator, wherein the first power cable communicator isfurther configured to: modulate the response information onto the powercable; and transmit the response information to the direct current powerdistributor using the first power input, wherein the direct currentpower distributor is further configured to transmit the responseinformation to the first RRU, and wherein the first RRU is configured totransmit the response information to the BBU using the CPRI.
 6. Thecontrol system of claim 2, wherein when the operation type is the statusinformation collection operation type, the first controller is furtherconfigured to: receive the status information of the target RRU from thefirst monitor and collector; add the status information of the targetRRU and an address of the BBU to status feedback information; andtransmit the status feedback information to the first power cablecommunicator, wherein the first power cable communicator is furtherconfigured to: modulate the status feedback information onto the powercable; and transmit the status feedback information to the directcurrent power distributor using the first power input, wherein thedirect current power distributor is further configured to transmit thestatus feedback information to the first RRU, and wherein the first RRUis further configured to transmit the status feedback information to theBBU using the CPRI.